WordPress cannot auto update and cannot find .maintenance file

i recently installed wordpress manually on a linux cloud machine via DigitalOcean which I migrated from a previous hosting service.

But now there is a warning up top of my Settings page that says An automated WordPress update has failed to complete - please attempt the update again now.

I have been looking for a solution but the only ones i can find is to delete the wp-content/upgrade/ folder and .maintenance file. The former I have deleted and the latter I could not find under /usr/share/wordpress. And yet I still get this error (and the current version of my WordPress seems to be 5.3.2 when the newest is 5.9.3 according to this site: https://en-ca.wordpress.org/download/)

Would anyone be able to advise on what to do to resolve this...?