Yes, it is PHP version related. The version used by the web host does not support that function call. I’ll be releasing version 8.1.2 within the next days or so which fixes this issue. Apologies for the trouble!
SKIP_DOTS was only in 8.0, try updating to 8.1.1. It no longers uses
SKIP_DOTS … but this still might not work because some versions of PHP do not like the
isDot replacement in 8.1.1. Any way 8.1.2 addresses both.