Sorry, I tried on FileZilla but could not figure it out. Please check this fix and try yourself:
https://github.com/joomla/joomla-cms/pull/41616/files
on this location: plugins/content/pagenavigation/src/Extension/PageNavigation.php
on line 42 change from
* @return mixed void or true
to
* @return void
and on line 53 change from
return false;
to
return;
and on this location: plugins/content/vote/src/Extension/Vote.php
on line 87 change from
* @return string|boolean HTML string containing code for the votes if in com_content else boolean false
to
* @return string HTML string containing code for the votes if in com_content else empty string
and on line 96 change from
return false;
to
return '';