Hay thanx a tun for this info…
I had the same issue & was able to figure out the problem from here. The issue turned out to be from the WP Events Calendar Plug-in so what I figured out you can do is form your FTP client, just rename the plugin folder or the individual plugin folders with [NameOfPlugin]-old… this will deactivate them… then you can rename it/them back to their original name & it will make the plugins available to reactivate again if you wish… then you can systematically track down the plugin that is creating the issue. Leave it deactivated until an update has arrived that fixes the problem or find a new one to replace it*
Bows to all beings*