Fix Docker Compose 'Port Already Allocated' for MySQL - How to Fix npm install Permission Denied Error-Resolve Chrome NET::ERR_CERT_AUTHORITY_INVALID Due to Date/Time
Before changing system settings, save your work and note the exact error text so you can compare results after each step.
Extra verification checklist
- Restart the affected app after changing permissions or configuration files.
- Test the same workflow in a clean browser profile or a temporary user account.
- Compare the result on another network if the error may be connection related.