How do I fix this error?

In the console there is an error titled

The .meta file Packages/com.unity.timeline/Editor/StyleSheets/Images/Shared/TimelineWarning.png.meta does not have a valid GUID and its corresponding Asset file will be ignored. If this file is not malformed, please add a GUID, or delete the .meta file and it will be recreated correctly

I have tried deleting the packages but they immediately come back before I re import them
Any help would be appreciated

 

Hey there,

Can you try deleting that meta file and then reopen Unity? It should auto generate one that works...

 

Thanks!

 

Did it work?

 

Hey. Where do You find the .meta file?

 

Edit > Project Settings > Editor > Versions Control, Mode : Visible Meta Files.

 

It worked for me! (Didn't even need to restart unity!)

 

I dont know where to delete the file from there it does nothing, please help me ASAP

 

The error should tell you what folder it is in, go there in windows explorer with the right click

 

Hi All, I have a similar problem and could not solve it with the ideas above. I need help.

My problem is the following: I cannot install XR Plugin management, I got many(55/148) of these errors:"

The .meta file Packages/https://com.unity.xr.management/.../Unity.XR.TestSupport... does not have a valid GUID and its corresponding Asset file will be ignored. If this file is not malformed, please add a GUID, or delete the .meta file and it will be recreated correctly"

What I'm done so far (checked many forum posts):
- tried to install XRPM from the project settings page and from the package manager too
- tried to delete meta files, bulk, and one by one
- added full access to the PackageCache folder
- checked firewall rules
- deleted the whole Library folder (at every try)
- deleted the XR loader assets (when I somehow got there)
- deleted the package-lock json
- tried the "Help/Reset packages to defaults" menu in Editor

I started with a fresh new VR template:
- Win11
- Unity 2021.3.8f1
- XR Plugin Management 4.2.1

I'm totally lost. Please help.

Thank you in advance!
Tamas (tas977)

 

[SOLVED]
Based on the log file documentation below, I've found another Cache folder with npm and packages folders inside of it.
I deleted these folders and now it's working nicely! (I also deleted the project's Library folder)

Unity - Manual: Log files (unity3d.com)
my folder was here: c:\Users\{myusername}\AppData\Local\Unity\cache

Best, T

 

This solved it for me. Thanks for sharing!