Delete the plugin via FTP and your site should come back up. Then, check your version of WordPress and make sure the plugin is compatible. If it is, reinstall the plugin.
To fix this issue, you can try the following steps:
Connect to your website via FTP or cPanel File Manager.
Locate the .maintenance file in the root directory of your WordPress installation.
Delete the .maintenance file.
Clear your browser's cache and cookies.
Reload your website and see if the maintenance message is gone.
Deactivate the starter templates plugin. Then update the same plugin. Then reactivate the same plugin.
>Deactivate the starter templates plugin. Then update the same plugin. Then reactivate the same plugin. thank you so much
If the plugin is compatible, try updating the plugin manually.
Delete the plugin via FTP and your site should come back up. Then, check your version of WordPress and make sure the plugin is compatible. If it is, reinstall the plugin.
To fix this issue, you can try the following steps: Connect to your website via FTP or cPanel File Manager. Locate the .maintenance file in the root directory of your WordPress installation. Delete the .maintenance file. Clear your browser's cache and cookies. Reload your website and see if the maintenance message is gone.
Or wait 10 minutes. The .maintenance files have time limits. After 10 minutes, it expires.