It is possible that the file in this WordPress installation or in your source WordPress installation (from where you created this file) has become corrupted and cannot be imported. Please delete this file and try again.
The error message may look something like: Plugin named “yith-topbar-countdown” is corrupted.
It is possible that the error is in this WordPress installation or your source WordPress installation (from where you created this file). Please delete the plugin and retry.
It will detect plugin issue first & display the plugin error on the UI)
The plugin named “yith-topbar-countdown” is corrupted. The error can be in this WordPress installation or in your source WordPress installation (from where you created this file), please delete this plugin and try again. Once you have done that if the file is corrupted too then the error will change and show the file corruption error discussed above. You can then delete the file and try again in that case.