Yes, using Cloudflare
I see DBTech Security also mentioned in the trace
Stack trace
#0 [internal function]: XF::handlePhpError(2, '[E_WARNING] fse...', '/home/nginx/dom...', 66)
#1 src/addons/SV/AttachmentImprovements/PartialResponseStream.php(66): fseek(Resource id #7, 1954472)
#2...