For the solution of this error, you can do a lot of searches on google, for example, you can try to do this type of search, but many sources will mention a code that should be added to the functions.php file, or the cause of the error will be explained, but it is entirely up to you to find the plugin that causes this error. The best thing to do is to disable individual plugins. (Be very careful if you have a security plugin or a plugin that manages your url redirects, then you may have difficulty activating plugins)
This error was caused by the plugin named “Meta Generator and Version Info Remover” on my system. I think this plugin missed an important update of WordPress and thus caused errors in many systems.
