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Troubleshooting

This section provides data on the following issues:

Blazon of error:	Error message:
General startup bug	- Error messages in the Package Manager window - Parcel Managing director missing or window doesn't open - Problems after upgrading Unity to new version - Resetting your projection's package configuration
Package installation bug	- Packet installation fails - Packages non recognized
Bug installing git dependencies	- No 'git' executable was found - git-lfs: command non found - Repository non institute - Could not read Username: terminal prompts disabled - Tin't update Git version
Asset Store A growing library of free and commercial avails created past Unity and members of the community. Offers a wide variety of avails, from textures, models and animations to whole project examples, tutorials and Editor extensions. More info See in Glossary packages (My Assets)	- 'Failed to parse Http response' in My Assets context
Scoped registries	- Missing 'My Registries' in the Parcel Manager window
Issues when building packages	- Missing MonoBehaviour errors - Loading error for hostfxr.dll on Windows

You tin can also run the Unity Package Manager Diagnostics tool if you are experiencing problems that might be network-related. For more information, encounter Network bug.

Fault messages in the Package Manager window

The Package Managing director displays error indicators in the Package Manager window when it encounters bug.

System-wide issues

• Network connection bug

  Error messages appear in the status bar when the Package Director has detected an outcome that isn't related to a specific bundle. For example, if the Package Managing director can't admission the package registry server, information technology displays this bulletin in the status bar:

  

  Network fault message

• Fault refreshing assets (or Error refreshing packages)

  If your network can't attain the package registry server, information technology'southward probably considering there is a connexion trouble with the network. When yous or your organization ambassador prepare the network fault, the status bar clears.

  If your network connectedness is working, simply you aren't signed into your Unity account, the Package Manager doesn't brandish any Asset Shop packages. When you endeavor to employ the My Avails context, the Package Manager displays an error in the status bar:

  

  Logged out of Unity account

  Click the Sign in push inside the list view to sign into your Unity business relationship through the Unity Hub.

Bundle-specific problems

• If a specific package has a problem when loading or installing (for instance, when determining which package versions to load), the fault icon () appears in the package list next to the compromised package (A). To detect out what the problem is, open the compromised bundle's details view to run into the detailed error message (B):

  

  Dependency error message

Package Manager missing or window doesn't open

The Package Manager window might get moved offscreen or hidden past another window. When this happens, it looks similar the Parcel Director window failed to open up. In this case, you can try to reset the window layout (Window > Layouts > Default) and reopen the Package Manager window once more.

If the Package Manager window withal doesn't announced, bank check your Unity Console window A Unity Editor window that shows errors, warnings and other messages generated by Unity, or your own scripts. More info
See in Glossary :

          Failed to resolve packages: The file [<project-path>/Packages/manifest.json] is not valid JSON:   Unexpected token '}' at 44:one   }                  

This error bulletin indicates that your manifest.json file is malformed. It also tells you lot the line number where the Package Manager failed to parse the file, so you lot can set the JSON. There are a number of online validators that you lot tin can use to attempt to right the problem. One time yous save the corrected file, Unity reloads the Package Managing director window.

If y'all upgraded from an early version of the Unity Editor, there may be other problems with your package manifest Each package has a manifest, which provides information about the bundle to the Packet Manager. The manifest contains information such as the name of the package, its version, a description for users, dependencies on other packages (if any), and other details. More info
Run into in Glossary file:

• Equally of 2019.iii, your manifest.json file should not contain any references to the com.unity.package-manager-ui package. You can either reset your project's package configuration or remove the following line from the manifest'south dependencies list:

                                "com.unity.package-manager-ui": "2.1.1",                          

• Cheque to see if your projection manifest Each Unity project has a project manifest, which acts as an entry bespeak for the Package Manager. This file must be available in the <project>/Packages directory. The Package Manager uses it to configure many things, including a list of dependencies for that project, as well as any bundle repository to query for packages. More info
  See in Glossary uses "exclude" as a package version. This is an obsolete value for the dependenciesIn the context of the Bundle Managing director, a dependency is a specific packet version (expressed in the form package_name@package_version) that a project or another package requires in society to piece of work. Projects and packages use the dependencies attribute in their manifests to define the set of packages they require. For projects, these are considered directly dependencies; for packages, these are indirect, or transitive, dependencies. More info
  See in Glossary holding. If you find any lines like these, remove the unabridged line. Package Director only installs packages that are explicitly included as a dependency in your project, then once you remove that entry, Bundle Manager ignores the parcel and doesn't install information technology.

If the Packet Director still fails to load, follow the procedures under Packages not recognized and Resetting your projection's package configuration.

Problems after upgrading Unity to new version

When you upgrade a project to a newer Unity version, the Package Manager automatically updates incompatible packages to newer compatible versions. However, if your packet doesn't compile, the Parcel Managing director displays error messages in the Console.

To correct these messages, read the fault letters and fix any problems you tin. For case, a package might be missing a dependency on some other package or version. In that case, you tin can try and install the package yourself.

You lot can as well effort the post-obit sequence of solutions until you lot find something that works:

• Back up and so delete the Packages folder under your project.
• Support and then delete the package sources in your project's Packages folder, leaving merely the manifest.json file. And then effort to reload the project.
• Create a new empty project. If the Packet Manager window loads successfully, supercede the Library/PackageCache/com.unity.package-manager-ui@<version> binder in the failing project with the same binder from the newly created project.
• As a concluding resort, you lot tin reset your projection to the default packet Unity automatically pre-installs a select number of default packages (for instance, the Analytics Library, Unity Timeline, etc.) when yous create a new projection. This differs from a bundled package because you don't demand to install it and it differs from a congenital-in bundle because information technology extends Unity's features rather than beingness able to enable or disable them.
  Run across in Glossary configuration and add back packages one at a time until it works.

Resetting your project'south bundle configuration

If a project has too many package issues, you tin can reset your project back to the default parcel configuration for the Editor's version of Unity. This operation resets all packages in your project. This might not fix the source of the problem, but it can help y'all figure out what the problem is.

Annotation: You tin't undo resetting your package configuration, so make certain you back up the manifest.json file outset or make sure your project is under source control. You tin too take extra precautions by cloning your project and testing out the performance on the clone before proceeding.

To return to the default package configuration, select Reset Packages to defaults from the Aid menu.

Assistance > Reset Packages to defaults

Resetting a clone of your projection

You can also test the render to the default packages before you perform the final change:

1. Clone your project by copy-pasting your projection folder and renaming it and then that information technology is easy to find (for example, if your projection is chosen MyProject and then you could use something like clone_MyProject).

2. Load your newly cloned project.

3. From the Assistance card, select Reset Packages to defaults.

   Depending on the size of your projection, this might take a few minutes.

4. Check that it successfully reset the packages. If then, you can perform the operation safely on the original project.

Bundle installation fails

If you lot are trying to install a new bundle from the registry and it is not working, information technology might be due to permission problems.

You must have total permissions on the cache folder:

• Windows: C:\Users\yourname\AppData\Local\Unity\cache
• MacOS: ~/Users/Library/Unity/cache

It might be a problem with the network. Check your firewall and proxy settings.

Sometimes institutional environments, such as schools, government offices, or network-protected workplaces prepare proxy servers to control traffic between the network and the Internet, and use their own server certificates which are not recognized past Unity or the Bundle Director. Talk to your network administrator.

Packages not recognized

If you come across a lot of compilation errors, this might indicate that Unity is not recognizing the packages in your existing project. In this case, you might be missing a .Net component.

For Windows:

1. Download and install Visual Studio 2017 version xv.nine.0 or higher with the .Net Core cross-platform development workload selected nether Other Toolsets.
2. Download and install the .NET SDK v2.two.101 component.

For MacOS:

1. Download and install the .Cyberspace SDK v2.2.101 component.

2. Install any recommended updates in Visual Studio

3. Apply homebrew to mash and install mono:

                 mash update brew install mono # optional brew upgrade mono                          

4. If necessary, delete the Library/obj/temp binder under your project and restart Unity.

5. If you are still experiencing difficulties, try rebooting your computer besides.

No 'git' executable was found

If you effort to install a package from a git URL, a bulletin similar to this appears:

          Cannot perform upm operation: Unable to add package [https://github.example.com/myuser/myrepository.git]: No 'git' executable was found. Delight install Git on your system and restart Unity [NotFound] UnityEditor.EditorApplication:Internal_CallUpdateFunctions()                  

git-lfs: command not found

If you are trying to download a bundle that uses Git LFS (Large File Storage), you might see this error message:

          Error when executing git control. git-lfs filter-process: command non plant.                  

This indicates that Git LFS is probably not installed on your motorcar. To make certain, you could test information technology on the command line:

          git lfs --version                  

If you meet something like this, Git LFS is installed:

          git-lfs/2.eight.0 (GitHub; darwin amd64; go one.12.7)                  

Otherwise, you can install it by following the Bitbucket GitHub instructions.

Repository not found

If you specify a location that does not exist, a message similar to this ane appears in the Unity Console:

          Cannot perform upm operation: Unable to add package [https://mycompany.github.com/gitproject/com.mycompany.mypackage.git]:   Error when executing git command. fatal: repository 'https://mycompany.github.com/gitproject/com.mycompany.mypackage.git/' not found  [NotFound] UnityEditor.EditorApplication:Internal_CallUpdateFunctions() (at /Users/builduser/buildslave/unity/build/Editor/Mono/EditorApplication.cs:310)                  

Check your spelling. To brand sure you are using the correct URL, go to the repository'southward page and copy the URL from the Clone push button:

Where to copy the URL on GitHub (A) and GitLab (B)

Click the button to the right of the URL on GitHub (A) or GitLab (B) to copy the URL to your clipboard.

If the location of the repository is correct, there may be another trouble with the URL:

• If you lot are targeting a specific revision, make sure your revision comes final. For case:
  https://github.example.com/myuser/myrepository1.git#revision
• If yous are targeting a revision and the package is not at the root, make sure the path query parameter precedes the revision anchor. For case:
  https://github.example.com/myuser/myrepository.git?path=/example/folder#v1.2.iii

Could not read Username: terminal prompts disabled

If you lot are trying to install a package from a private repository that requires authentication, a bulletin similar to this one appears in the Unity Console:

          Cannot perform upm functioning: Unable to add package [https://mycompany.github.com/gitproject/com.mycompany.mypackage.git]:   Error when executing git command. fatal: could non read Username for 'https://mycompany.github.com': final prompts disabled  [NotFound] UnityEditor.EditorApplication:Internal_CallUpdateFunctions() (at /Users/builduser/buildslave/unity/build/Editor/Mono/EditorApplication.cs:310)                  

This bulletin is likely due to the fact that Package Manager does not provide an interactive terminal or dialog where y'all can enter your username and password for HTTP, or your passphrase to unlock your SSH key:

• With HTTP(S), every time yous log onto BitBucket, GitHub or GitLab you need to enter your username and countersign in a final or a dialog box. However, the Package Manager does not provide an interactive terminal or dialog where you tin enter your username and countersign for HTTP(Southward).

  To bypass this, use i of the workarounds suggested in Solutions for HTTPS.

• SSH uses a pair of public and individual SSH keys. Y'all can add together your public SSH key to Bitbucket, GitHub or GitLab then admission repositories without having to enter a username and password.

  Still, if you have gear up a passphrase to keep your SSH key safe, you still take to enter that passphrase in a last or a dialog box in club to authorize your central. In that case, you can use an SSH amanuensis that can unlock your SSH fundamental to authenticate with the Packet Manager on your behalf.

Solutions for HTTPS

The Package Director does not provide an interactive terminal or dialog where you can enter your HTTP(S) username and password. To bypass this, utilise one of these workarounds:

• Use a credential director (Git Credential Director for Windows or OSXKeyChain). Credential managers handle sending the countersign without having to use a terminal or a command prompt.
• Utilize git-credentials from a terminal or command prompt. Then launch the Hub from the same terminal so that Unity has access to the buried or stored credentials.
• Use SSH to authenticate instead. If you set upward your SSH central without a passphrase, the Parcel Manager doesn't take to decrypt it in order to authenticate with the Git server. If you determine to utilize a passphrase for added security, you can still get effectually the authentication trouble by using the ssh-agent on either macOS or Windows.

Solutions for SSH

If you are using the SSH protocol to install a parcel by Git URL, you might go an authentication mistake from Git. This typically happens when you ready a individual SSH key on your local car that is protected by a passphrase.

The solution to this problem is to prepare upward an SSH agent that tin can unlock your SSH cardinal to authenticate with the Package Manager on your behalf. Follow the instructions in the department that corresponds to your operating system:

• Setting up OpenSSH for Windows
• Adding SSH keys to your SSH Agent for macOS

Setting up OpenSSH for Windows

The native Windows OpenSSH version of the ssh-amanuensis works better than the version bachelor by default with Git for Windows. This procedure explains how to set up the OpenSSH client and add your key to its ssh-agent. If you are using Git for Windows, you can also prioritize the native Windows OpenSSH over the Git for Windows SSH agent:

1. Make sure the OpenSSH Client is installed by searching for information technology in the Windows Settings Optional features window (Beginning > Settings, then search for "Optional features"). This applies to Windows 10+.

2. Check your %PATH% environs variable to make certain the native Windows OpenSSH location appears (for example, C:\WINDOWS\System32\OpenSSH\).

   Note: If you are already using Git for Windows, brand sure the native Windows OpenSSH location appears before the Git for Windows SSH location in your %PATH% variable. This ensures that Windows uses the native Windows OpenSSH agent over the Git for Windows SSH agent.

3. In a PowerShell concluding, outset the ssh-agent process and brand certain information technology starts automatically:

                 # Fix the ssh-amanuensis service to first automatically and manually get-go information technology now Get-Service ssh-amanuensis | Set-Service -StartupType Automatic # Run the ssh-agent process to start the ssh-agent service ssh-agent                          

4. Import your key into the ssh-agent by running ssh-add on the control line and so following the instructions. By default, the agent adds the %USERPROFILE%\.ssh\id_rsa key and prompts you for the password.

                 # Import the key ssh-add                          

   To use a different fundamental, you can specify it as an argument:

                 # Set the ssh-agent service to start automatically and manually get-go it at present ssh-add <your-secure-ssh-key-proper noun>                          

   If you can't recall the proper name of your primal, you tin ask the agent to list them:

                 ssh-add -fifty                          

5. If you installed Git for Windows, reset the %GIT-SSH% surround variable to make sure that Git e'er uses the native Windows OpenSSH version of the ssh-agent:

                 [Environment]::SetEnvironmentVariable("GIT_SSH", "$((Become-Command ssh).Source)", [System.EnvironmentVariableTarget]::User)                          

Calculation SSH keys to your SSH Agent for macOS

Use the ssh-add command to add together your SSH keys to the ssh-agent running on your macOS system. The command parameter you use depends on your version of macOS:

• Prior to macOS 12, utilize:

                ssh-add -K ~/.ssh/<your-secure-ssh-key-name>                          

• Starting with macOS 12, use:

                ssh-add --apple tree-use-keychain ~/.ssh/<your-secure-ssh-key-name>                          

Later on y'all run this command, the last asks for the password to unlock your SSH fundamental and so adds it to the macOS keychain. Withal, once y'all restart your organization, every central stored in the ssh-amanuensis is reset.

To prevent re-entering your countersign after restarting your system, open the ~/.ssh/config file (or create one if y'all don't notice it), and add together the following:

          Host *     UseKeychain yeah     AddKeysToAgent yep     IdentityFile ~/.ssh/<your-secure-ssh-fundamental-name>                  

Restart your car to apply these changes.

Can't update Git version

If you are trying to update your Git dependency The Package Managing director retrieves Git dependencies from a Git repository straight rather than from a parcel registry. Git dependencies use a Git URL reference instead of a version, and in that location's no guarantee near the package quality, stability, validity, or even whether the version stated in its packet.json file respects Semantic Versioning rules with regards to officially published releases of this bundle. More than info
See in Glossary to a newer version from the repository, but it's not working, it's probably because your Git dependency is locked. If y'all want to update your Git dependency to a newer version from the repository, use the Add package from git URL push and enter a Git URL. For more data, come across Locked Git dependencies.

'Failed to parse Http response' in My Assets context

If you meet the following bulletin in the Console window when trying to download an Asset Store bundle, there might be a problem with your Asset Store enshroud:

[PackageManager] Fault Failed to parse response. UnityEditor.AsyncHTTPClient![:D](https://forum.unity.com/styles/default/xenforo/articulate.png)ane(State, Int32)

To solve this trouble, delete all downloaded assets from the Asset Store packet directory so try downloading the assets once again.

Alarm: If your project contains a lot of asset data, this might have a lot of fourth dimension and bandwidth to re-download everything.

Missing 'My Registries' in the Package Managing director window

Not all registry providers are compatible with Unity's Parcel Manager. If the package registry server yous added does not implement the /-/v1/search or /-/all endpoints, your scoped registry is not compatible with Unity's Package Managing director, and doesn't announced in the My Registries context in the Packet Director window.

Missing MonoBehaviour errors

While edifice, if in that location are a lot of errors virtually Missing Behavior, the UnityLinker might exist mistakenly stripping out a component that information technology thinks is unreferenced. Information technology often does this considering the stripping level is too ambitious. For instance, if you have a prefab An asset blazon that allows you lot to store a GameObject complete with components and properties. The prefab acts as a template from which you can create new object instances in the scene. More info
Run into in Glossary in an AssetBundle that references the SpriteShape component in the 2D SpriteShape package, the object might be missing and might generate compiler warnings.

To ready this, you can either lower the stripping level for the UnityLinker or declare the parcel's assemblies within the link.xml file in order to preserve them from existence stripped:

          <linker>     <assembly fullname="Unity.2nd.SpriteShape.Runtime" preserve="all"/>     <assembly fullname="Unity.second.Common.Runtime" preserve="all"/>  </linker>                  

For more information on stripping levels and the UnityLinker, encounter Managed code stripping.

Loading mistake for hostfxr.dll on Windows

If the Console reports that the hostfxr.dll library was found, but Unity failed to load it from C:\<path_to_app>\hostfxr.dll, y'all can fix this error on Windows 7 or Windows Server 2008 R2 by installing both KB2999226 and KB2533623 patches.

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Source: https://docs.unity3d.com/Manual/upm-errors.html

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