When I embed a wpdatatables shortcode in an elementor page, it causes a fatal error. Here's the stacktrace from log file:

[09-Sep-2020 05:56:20 UTC] PHP Notice:  Undefined index:  in /var/www/primeinvestor.in/htdocs/wp-content/plugins/wpdatatables/source/class.wpdatatable.php on line 1042

[09-Sep-2020 05:56:20 UTC] PHP Notice:  Undefined index:  in /var/www/primeinvestor.in/htdocs/wp-content/plugins/wpdatatables/source/class.wpdatatable.php on line 339

[09-Sep-2020 05:56:20 UTC] PHP Notice:  Undefined index:  in /var/www/primeinvestor.in/htdocs/wp-content/plugins/wpdatatables/source/class.wpdatatable.php on line 340

[09-Sep-2020 05:56:20 UTC] PHP Fatal error:  Uncaught Error: Call to a member function setFilterType() on bool in /var/www/primeinvestor.in/htdocs/wp-content/plugins/wpdatatables/source/class.wpdatatable.php:3031

Stack trace:

#0 /var/www/primeinvestor.in/htdocs/wp-content/plugins/wpdatatables/source/class.wpdatatable.php(3008): WPDataTable->prepareRenderingRules()

#1 /var/www/primeinvestor.in/htdocs/wp-content/plugins/wpdatatables/controllers/wdt_functions.php(587): WPDataTable->fillFromData()

#2 /var/www/primeinvestor.in/htdocs/wp-includes/shortcodes.php(343): wdtWpDataTableShortcodeHandler()

#3 [internal function]: do_shortcode_tag()

#4 /var/www/primeinvestor.in/htdocs/wp-includes/shortcodes.php(218): preg_replace_callback()

#5 /var/www/primeinvestor.in/htdocs/wp-includes/class-wp-hook.php(287): do_shortcode()

#6 /var/www/primeinvestor.in/htdocs/wp-includes/plugin.php(206): WP_Hook->apply_filters()

#7 /var/www/primeinvestor.in/htdocs/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php(1683): apply_filters()

#8 /var/www/primeinvestor.in/h in /var/www/primeinvestor.in/htdocs/wp-content/plugins/wpdatatables/source/class.wpdatatable.php on line 3031

This is happening with regular Gutenberg editor as well. After this happens, the page becomes unusable and I have to trash the page and start over again, even to test.

OK, narrowing down, this is happening just with one table though. The others seem fine (although I am having other issues with those tables). Can you tell me what could cause a fatal error in a table? Something about column definition?

To add to my woes, I can't even go into the table configuration of this table - it's throwing the same fatal error.

Ok, the Fatal error problem is solved. The issue was I had edited the csv file to add a column name in place of an empty column name. Wish Wpdatatables was a little more graceful about this failure. But I updated it and it's find now.

It would be great if this error failed gracefully instead of locking up the edit screen for both that table and for any pages that the table is embedded on.