Working with Salesforce, org is authorised, everything works fine until it doesn't and there's no error code or anything.
In the morning I retrieved a few files I had to change, 10 minutes later when I needed to retrieve another one, it kept "Running SFDX: Retrieve Source from Org" for a few minutes and failed. Then again and again, whether I deploy something or retrieve, it just fails.
Closed, waited for it to sync, refreshed all lwcs, still the same problem.
You may have a sfdx-cli issue. There is a known issue right now with the version 7.150.0 reported here: https://github.com/salesforcecli/status
My team was having issues with our CI pipeline, and our fix was to use an older version. Once we updated our CI tool to grab
https://developer.salesforce.com/media/salesforce-cli/sfdx/versions/7.149.1/3881a5a/sfdx-v7.149.1-3881a5a-linux-x64.tar.xz
extract the binary, and run the tool, our deploys started working successfully.Check your local and CI tool with the
sfdx --version
command. If you are using the broken one, roll it back to the version that you need.