rnthc on "[Plugin: All-in-One Event Calendar] Error after upading Google XML sitemaps"

Hello there,
After i was updating my Google XML Sitemap, it somehow made error on my back-end in All-in-one calender.

Now I can't enter to my installed plug-ins. It will give me an error. And it was right after I updates XML sitemaps. Is there anybody else who knows about this bug?
See link:

See this screenshot

Thank you,
Sincerly
https://wordpress.org/plugins/all-in-one-event-calendar/