In Laravel, a 503 Service Unavailable error typically indicates that the server is temporarily unable to handle the request. This can happen for several reasons:
1. Server Overload: The server might be experiencing high traffic or resource usage, causing it to be unable to process requests.
2. Maintenance Mode: Laravel might be in maintenance mode, which can cause this error.
3. Resource Limitations: The server might be running out of resources like CPU, memory, or disk space.
If let's say everything resource limitation is good, then we need to do some workaround within configuration artisan.
If you are on Plesk, then go to Laravel and see Artisan.
And now type up so we can change the mode.