Deprecated function: explode(): Passing null to parameter #2 ($string) of type string is deprecated in nofollow_noindex_page_attachments() (line 22 of modules/contrib/nofollow_noindex/nofollow_noindex.module).

kishan@kk → made their first commit to this issue’s fork.

Noting that I was able to reproduce on simplytest.me while testing this module.

id.rem.dev → made their first commit to this issue’s fork.

Improved the NULL coalescing. The warning related to the PHP version. Anyway, the config get method does not have default value parameter.