[Plugin: Event Registration] Getting errors in admin

Have the following error in the admin panel on Event Setup page:

EVENTS LISTING:
Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in /var/customer/webs/hikeandlearn/hikeandlearn.org/shop/wp-content/plugins/event-registration/er_forms.inc.php on line 24

and this one on Organization Setup page:

Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in /var/customer/webs/hikeandlearn/hikeandlearn.org/shop/wp-content/plugins/event-registration/event_regis_admin_config_org.php on line 171

Nothing seems to be saving. What should I do? Thanks!

Edit: Sorry looks like this went in the wrong forum. Feel free to move…