Incompatible or poorly coded plugins or themes can interfere with the publishing process. A conflict between different plugins or a theme and a plugin might lead to the updating failure.

If your server has a low PHP memory limit, it might not have enough resources to handle the publishing process, resulting in a failure. Increasing the PHP memory limit may resolve this issue.

Incorrect file or directory permissions can prevent WordPress from writing or updating files. Ensure that the necessary files and directories have the correct permissions.