@threadi Thank you, but I only tried cloning the latest version from GitHub after testing many standard versions in an attempt to fix the issue — but it still didn’t work. @wpfy gave me the correct solution in the end.
@wpfy Thank you very much!!!!!!!!!!!!!!! When I changed the permissions of wp-content/uploads to 644, the problem was resolved. This issue had troubled me for a long time, but I couldn’t find a solution elsewhere. Thank you again!