Errors when uploading to php 8.1

Hello.

Since uploading my wordpress web to php 8.1, on my admin view the following messages appear and prevent me to use some features of other plugins. For other users or non-logged visitors, it turns up to appear like a blue belt above the web header.

I’ve been using BBB plugin for years and never had problems with it.

Please, can you help me or solve this one?

Thank you.

Error messages:

Warning: Undefined array key “post_type” in /homepages/21/d831692469/htdocs/app831692732/wp-content/plugins/bigbluebutton/admin/class-bigbluebutton-admin.php on line 332

Warning: Cannot modify header information – headers already sent by (output started at /homepages/21/d831692469/htdocs/app831692732/wp-content/plugins/bigbluebutton/admin/class-bigbluebutton-admin.php:332) in /homepages/21/d831692469/htdocs/app831692732/wp-admin/includes/misc.php on line 1416

Warning: Cannot modify header information – headers already sent by (output started at /homepages/21/d831692469/htdocs/app831692732/wp-content/plugins/bigbluebutton/admin/class-bigbluebutton-admin.php:332) in /homepages/21/d831692469/htdocs/app831692732/wp-includes/functions.php on line 6865

Warning: Cannot modify header information – headers already sent by (output started at /homepages/21/d831692469/htdocs/app831692732/wp-content/plugins/bigbluebutton/admin/class-bigbluebutton-admin.php:332) in /homepages/21/d831692469/htdocs/app831692732/wp-includes/pluggable.php on line 1416

Warning: Cannot modify header information – headers already sent by (output started at /homepages/21/d831692469/htdocs/app831692732/wp-content/plugins/bigbluebutton/admin/class-bigbluebutton-admin.php:332) in /homepages/21/d831692469/htdocs/app831692732/wp-includes/pluggable.php on line 1419

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