Something went wrong while fetching events error

Hello,

I figured out the answer to this in my case but wanted to post it here for anyone else since the posts I see here refer to Security and Firewall plugins and my issue was related to using the 6g Firewall in my .htaccess file.

Remove the line below and it should fix the issue:
RedirectMatch 403 (?i)(~||< |>|:|;|,|%|\\|\s|\{|\}|\[|\]|\|)`

I found the issue here from a smart person named Dumitru Brinzan:
[FIX] All-in-One Event Calendar: Something went wrong while fetching events (403 Forbidden)