Critical error on one(important) page of website with a table displaying data from a spreadsheet using the WPDatatables plugin. All plugins are up to date. We have verified the error is caused by the WPdatatables plugin.  This is the page

https://intervalfundtracker.com/data/active-interval-funds/

Not only is the page not working for visitors, but I am also unable to edit the page in worpdress(I also get a critical error).  Additionally, if I try to edit the table on this page using WPDatables, I get the same error.

I've attached 2 screenshots. "WPDatatables Critical Error" is what visitors see on the page.  "WP DataTables Critical Error 2" is what I see when I try to edit the table that appears on this page. 

Note WP Datatables appears to be working on other pages of the website, with Manual Tables.  This one page with the problem is the only page where the table that is supposed to be displayed is created by uploading an excel spreadsheet. 

Please advise how we can fix this as soon as possible.  I submitted a private ticket earlier this week but did not receive a response. 

Here is the text of the error:

Notice: Undefined index: in /nas/content/live/infundtracker/wp-content/plugins/wpdatatables/source/class.wpdatatable.php on line 1132

Fatal error: Uncaught Error: Call to a member function setFilterType() on bool in /nas/content/live/infundtracker/wp-content/plugins/wpdatatables/source/class.wpdatatable.php:3127 Stack trace: #0 /nas/content/live/infundtracker/wp-content/plugins/wpdatatables/source/class.wpdatatable.php(3104): WPDataTable->prepareRenderingRules(Array) #1 /nas/content/live/infundtracker/wp-content/plugins/wpdatatables/controllers/wdt_functions.php(603): WPDataTable->fillFromData(Object(stdClass), Array) #2 /nas/content/live/infundtracker/wp-includes/shortcodes.php(343): wdtWpDataTableShortcodeHandler(Array, '', 'wpdatatable') #3 [internal function]: do_shortcode_tag(Array) #4 /nas/content/live/infundtracker/wp-includes/shortcodes.php(218): preg_replace_callback('/\[(\[?)(wpdata...', 'do_shortcode_ta...', ' <p>This page i...') #5 /nas/content/live/infundtracker/wp-includes/class-wp-hook.php(287): do_shortcode(' <p>This page i...') #6 /nas/content/live/infundtracker/wp-includes/plugin.php(206): WP_Hook->apply_filters(' <p>This page i.. in /nas/content/live/infundtracker/wp-content/plugins/wpdatatables/source/class.wpdatatable.php on line 3127

There has been a critical error on your website.

I submitted this ticket last week and still have not received a response. Are you still providing support for WPDatatables or not? As this ticket indicates, this product is no longer functional for tables made from spreadsheets.  Please fix this or provide me a refund as soon as possible.