After updating the Events Calendar plugin to version 6 a PHP warning can occur when using Views:
PHP Warning: call_user_func_array() expects parameter 1 to be a valid callback, class 'Tribe__Events__Query' does not have a method 'pre_get_posts' in /Users/nigelanderson/OnTheGo/Sites/events/wp-includes/class-wp-hook.php on line 307
Prior to version 6 the Events Calendar used pre_get_posts to hijack any query for its event post type, and Views/Blocks has a compatibility layer to workaround this to be able to create Views of event posts.
The warning occurs because of a change in The Events Calendar which means this is no longer needed.
We will fix this in a plugin update, but for now you can use a modified version of the file responsible for the compatibility layer which adds a version check.
Download and unzip this file.
Replace the file with the same name at plugins/toolset-blocks/application/controllers/compatibility/ (or plugins/wp-views/application/controllers/compatibility/).