Are there any errors in the database logs?

can you share the screenshot

of what youre doing and what method re u using for the connection ??

yes

Try selecting the service, then press Ctrl/Cmd + K and select redeploy source image.

this matches a known railway issue, not your config. same exact error message showed up on a postgres db panel a few months back (station.railway.com/questions/we-are-unable-to-connect-to-the-database-0f099290) and a railway employee confirmed it was on their end, not the users app, and fixed it from their side.

workaround while it's happening: use the Connect button, grab the public tcp proxy connection string, and connect with an actual mysql client (cli, dbeaver, tableplus, workbench) instead of the built-in data tab. that bypasses the broken internal path and still lets you view/query your data

This hasn't worked for me - I see the same issue

Same error as fredoyetayo above.

when i try to connect with tableplus, i get "Lost connection to MySQL server at 'reading initial communication packet', system error: 0"

Please create your own thread.