Anonymous users can't see linked session in speakers page

[iamareebjamal]

The implementation does not work for anonymous users. The linked page should be available openly on the web (without options to edit session details). Please give permissions to view this page for everyone. Therefore opening the issue.

Compare event here: https://eventyay.com/e/8fa7fd14/speakers and click on sessions without being logged in.

Originally posted by @mariobehling in #4853 (comment)