admin-ajax.php?_fs_blog_admin=true

I receive a 403 Forbidden Page Error when I try to update pages on my site. I only receive this error when I have the classic editor installed. When I remove it and use the default block editor the pages save/update fine.

ModSecurity: Access denied with code 403 (phase 2). Matched phrase “filestore” at ARGS:content. [file “/etc/httpd/conf/modsecurity.d/rules/custom/003_i360_1_vectors.conf”] [line “86”] [id “77316844”] [msg “Block by known DB injection domain||Injection:true||Endpoint:/wp-admin/admin-ajax.php?_fs_blog_admin=true||Matched:

To add additional intrigue to this issue. This only occurs with some pages on my site. With some pages with the classic editor installed I can save/update and other I receive the 403. When I install it all pages work fine.