I was update Ghost 5.1.0 to 5.1.1, and after succesfull updating - have error:
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Checking system Node.js version - found v16.15.0
Ensuring user is not logged in as ghost user [skipped]
Checking if logged in user is directory owner [skipped]
Checking current folder permissions
Checking content folder ownership
Checking memory availability
Checking binary dependencies
One or more errors occurred.
- Validating config
Error detected in the production configuration.
Message: Config file is not valid JSON
OS: Ubuntu, v20.04.2 LTS
Node Version: v16.15.0
Ghost Version: 5.1.1
Ghost-CLI Version: 1.21.0
Command: ‘ghost start’