2.4.1 breaking my site

Hello, and thanks for your great plugin!!

2 days ago the plugin autoupated on my site, and ever since then, the site wouldn’t load, saying “Critical error”. My error_log shows thousands of lines like this:

[23-Oct-2022 06:08:17 UTC] PHP Fatal error:  Uncaught Error: <strong>Call to a member function get() on null</strong> in /home/mtneboor/public_html/wp-includes/query.php:28
Stack trace:
#0 /home/mtneboor/public_html/wp-content/plugins/the-events-calendar/src/Tribe/Query.php(46): get_query_var('tribe_events_fr...')
#1 /home/mtneboor/public_html/wp-includes/class-wp-hook.php(307): Tribe__Events__Query::parse_query(Object(WP_Query))
#2 /home/mtneboor/public_html/wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array)
#3 /home/mtneboor/public_html/wp-includes/plugin.php(524): WP_Hook->do_action(Array)
#4 /home/mtneboor/public_html/wp-includes/class-wp-query.php(1112): do_action_ref_array('parse_query', Array)
#5 /home/mtneboor/public_html/wp-includes/class-wp-query.php(1805): WP_Query->parse_query()
#6 /home/mtneboor/public_html/wp-includes/class-wp-query.php(3613): WP_Query->get_posts()
#7 /home/mtneboor/public_html/wp-includes/post.php(2410): WP_Query->query(Array)
#8 /home/mtneboor/public_html/wp-content/plugins/pdb-email-expansion/cpt_email_templates/con in /home/mtneboor/public_html/wp-includes/query.php on line 28

I know it doesn’t reference your plugin, but rather the pdf-email-expansion plugin (which is an add-on to your plugin) … but the error started exactly when your plugin updated, so I imagine it’s related. Perhaps the email plugin is relying on something in your plugin, that’s now returning null? I’ll send this message to that plugin author too.

(I’m also baffled by the stack trace, as to how it starts with The Events Calendar and ends up calling (or being called by?) the email plugin.)

Any ideas?!!
Thanks!
Julie