I wanted to give an update that my issue seems to be resolved now. It looks like the problem might have been related to another plugin, BetterDocs, as everything started working correctly after adjusting some settings.
Hi threadi,
Thanks a bunch for your help! It seems the issue was caused by a plugin creating duplicates and storing them in nginx’s temp directory. We’ve fixed it by adjusting the permissions to allow WordPress to write to that directory. Really appreciate your assistance in figuring this out!