[Plugin: Business Hours Plugin] Fatal error after installed

After install (via WP add plugins page), unable to open installed plugins or other pages – only got following error msg:

Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 491520 bytes) in /data/9/1/39/65/1365880/user/1464920/htdocs/wordpress/wp-admin/menu.php on line 254

I should not have exceeded my memory, everything else works fine.

I could not access the installed plugins (or most other pages) to uninstall, so I deleted it by FTP.

After deleting via FTP got the following error msg:

The plugin business-hours-plugin/working-hours.php has been deactivated due to an error: Plugin file does not exist.

Is this a problem with GoDaddy VDS server? Or possible conflict with other plugins?

https://www.ads-software.com/extend/plugins/business-hours-plugin/