Quiz doesn't finish

Hello again, sad no one have replied ??
I tried firebug to find the error, and it says, that fault is in wpProQuiz_front.min.js
TypeError: i is undefined
line 21.
b.find(‘.wpProQuiz_question_page, input[name=”tip”]’).show();A.find(“.wpProQuiz_time_limit_expired”).hide();y.last().val(R);C=!1},checkQuestion:function(a,c){a=void 0==a?j:a;a.each(function(){var a,j,g=f(this),k=g.find(“.wpProQuiz_questionList”),i=e.json[k.data(“question_id”)];a=i.type;r.questionStop();if(g.data(“check”))return!0;if(“single”==i.type||”multiple”==i.type)a=”singleMulti”;var n=!0,l=0,m=f.isArray(i.points);({singleMulti:function(){var a=k.find(“.wpProQuiz_questionInput”).attr(“disabled”,

As I said in first post, on default theme plugin works. On my – not. Could someone please take a look?
https://www.inakademia.pl/800-2/
It’s here, type login: wpproquiz and pass: quizzer for access ??

Hi,

I have found the error. The error is in the file “/wp-content/themes/catalyst/js/jquery.tools.min.js” (called by “https://www.inakademia.pl/wp-content/themes/catalyst/js/common.js”)

Pls update from 1.2.5 of 1.2.7
-> https://jquerytools.org/download/

And

Pls update your thmes “catalyst” from version 1.3 to 1.6

try again