Unknown error occured while loading

So this is starting to happen pretty often and its annoying to have to reimport and redo things almost everytime my project is launched.

This is starting to happen more often than i expect it. There is about a 70% chance each time that i boot up my project that i get these messages in the console: https://imgur.com/a/uJcWbZX

Everytime that this happens, i have to do most of these steps:

1. Re-Create my old additonal quality settings (Cause: Import fail of qualitysettings.asset)

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2. Re-Import the standard asset's water pro materials, otherwise the water looks like: https://imgur.com/a/DUYx9rO (Cause: Import fail of the material for some reason)

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Why is this? I realy need to know! If anyone needs any more information to be provided, i am happy to give it away. Thanks for any answer!