Google Web Stories & wpDiscuz

I’m having a strange behavior at the moment:
When wpDiscuz is activated, i can’t use the Google Web Stories Plugin. As soon as i deactivate the plugin, everything works.

Everytime i try to access the Dashboard of the Google Plugin or any other backend site, it trows the following error:

Fehler-Details
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Ein Fehler vom Typ E_ERROR wurde in der Zeile 225 der Datei /home/kaffeepflanze-pflege.de/public_html/wp-content/plugins/web-stories/includes/Admin/Cross_Origin_Isolation.php verursacht. Fehlermeldung: Uncaught TypeError: Argument 3 passed to Google\Web_Stories\Admin\Cross_Origin_Isolation::add_attribute() must be of the type string, null given, called in /home/kaffeepflanze-pflege.de/public_html/wp-content/plugins/web-stories/includes/Admin/Cross_Origin_Isolation.php on line 211 and defined in /home/kaffeepflanze-pflege.de/public_html/wp-content/plugins/web-stories/includes/Admin/Cross_Origin_Isolation.php:225
Stack trace:
#0 /home/kaffeepflanze-pflege.de/public_html/wp-content/plugins/web-stories/includes/Admin/Cross_Origin_Isolation.php(211): Google\Web_Stories\Admin\Cross_Origin_Isolation->add_attribute()
#1 /home/kaffeepflanze-pflege.de/public_html/wp-includes/class-wp-hook.php(303): Google\Web_Stories\Admin\Cross_Origin_Isolation->get_avatar()
#2 /home/kaffeepflanze-pflege.de/public_html/wp-includes/plugin.php(189): WP_Hook->apply_filters()
#3 /home/kaffeepflanze-pflege.de/public_html/wp-includes/pluggable.php(2722): apply_filters()
#4 /home/kaffeepflanze-pflege.de/public_html/wp-includes/admin-bar.ph