Hello,
The problem was caused by Essential Grid plugin. I’ve deactivated it. Please check Pages menu now. If you want to use this plugin try to increase memory_limit value (ask your host to do this) as there was such error when the plugin is activated:
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 81 bytes)
If the issue is resolved after that you can disable debug mode.
Thank you.
Regards,
Eva Kemp.