For running J!5.1 you must https://fabrikar.com/forums/index.php?wiki/update-from-github/ or include the new file manually https://fabrikar.com/forums/index.php?threads/joomla-5-1-and-fabrik-cannot-find-files-error.54473/post-285151 See also Announcements
Please see our announcement here.
<fieldset class="fabrikGroup fabrikHide" id="group715" style="opacity: 0; visibility: hidden;">
function hidePrev(el)
{
var prevClaim = el.form.formElements.get('aaa_my_profile___prev_claim');
var prevSucc = el.form.formElements.get('aaa_my_profile___prev_success');
var prevYear = el.form.formElements.get('aaa_my_profile___year_application');
var prevTitle = el.form.formElements.get('aaa_my_profile___official_course_title');
var prevProv = el.form.formElements.get('aaa_my_profile___course_provider');
while(prevClaim.getValue() < 0.01){
prevSucc.className += ' fabrikHide';
prevYear.className += ' fabrikHide';
prevProv.className += ' fabrikHide';
prevTitle.className += ' fabrikHide';
function hidePrev(el)
{
var prevClaim = el.form.formElements.get('aaa_my_profile___prev_claim');
var prevSucc = el.form.formElements.get('aaa_my_profile___prev_success');
var prevYear = el.form.formElements.get('aaa_my_profile___year_application');
var prevTitle = el.form.formElements.get('aaa_my_profile___official_course_title');
var prevProv = el.form.formElements.get('aaa_my_profile___course_provider');
while(prevClaim.getValue() < 0.01){
prevSucc.classList.add("fabrikHide");
prevYear.classList.add("fabrikHide");
prevProv.classList.add("fabrikHide");
prevTitle.classList.add("fabrikHide");
form_1.js:32 Uncaught TypeError: Cannot read properties of undefined (reading 'add')
at hidePrev (form_1.js:32:24)
at eval (eval at runLoadEvent (element.js:3:2812), <anonymous>:1:1)
at Object.runLoadEvent (element.js:3:2812)
at s.extend.$owner (mootools-core.js:3:17367)
at Object.addNewEvent (elementlist.js:3:881)
at s.extend.$owner (mootools-core.js:3:17367)
at Object.dispatchEvent (form.js:3:15033)
at s.extend.$owner (mootools-core.js:3:17367)
at 1:2169:8
at Object.execCb (<anonymous>:29:311)