@edonbajrami have you some custom script for cf7 in your template? can we take a look @ your website?
the errors mentioned above are fired by custom js, in the last week i’ve seen a lot of error like your and all comes from old themes… “Cannot read property ‘querySelector’ of null” means the javascript is looking for a dom element that is never been on the page (most of the time), removed (with js), pointing nothing.
@buildozzer take a look at your javascript for example /wp-content/themes/farm/js/main.js?ver=1.0.0 line 137-153 + 180-194
//// 11. Open Modal Thanks Form Submit
const wpcf7Elm = document.querySelector('.wpcf7');
wpcf7Elm.addEventListener(<code>wpcf7mailsent</code>, function (e) {
.....
//// 13. Validator Form CF7
const inputName = jQuery('form input[type="text"]')
inputName.change(function (e) {
let colInput = this.value.length,
idEl = this.id,
$el = <code>#${idEl}</code>
if (colInput < 20) {
jQuery(<code>${$el} form input[type="submit"]</code>).prop("disabled", true)
jQuery(<code>${$el} form .wpcf7-response-output</code>).text('Введите корректное ФИО')
jQuery(<code>${$el} form .wpcf7-response-output</code>).css({ 'display': 'block' })
} else {
jQuery(<code>${$el} form input[type="submit"]</code>).prop("disabled", false)
jQuery(<code>${$el} form .wpcf7-response-output</code>).text('')
jQuery(<code>${$el} form .wpcf7-response-output</code>).css({ 'display': 'none' })
}
})