Captcha check causes jquery error and prevents login

I’ve created a login form and added the recaptcha field, v2. When trying to login with all fields filled in correctly, I get a js error as shown below. Any idea what this might be? (PS: the same happens with recaptcha v3)

jquery.min.js:2 Uncaught Error: Syntax error, unrecognized expression: Class ‘ReCaptcha\ReCaptcha’ not found
at Function.se.error (jquery.min.js:2)
at se.tokenize (jquery.min.js:2)
at se.select (jquery.min.js:2)
at Function.se [as find] (jquery.min.js:2)
at S.fn.init.find (jquery.min.js:2)
at new S.fn.init (jquery.min.js:2)
at S (jquery.min.js:2)
at user-meta.js?ver=2.4:167
at Object.success (user-meta.js?ver=2.4:130)
at c (jquery.min.js:2)
se.error @ jquery.min.js:2
se.tokenize @ jquery.min.js:2
se.select @ jquery.min.js:2
se @ jquery.min.js:2
find @ jquery.min.js:2
S.fn.init @ jquery.min.js:2
S @ jquery.min.js:2
(anonymous) @ user-meta.js?ver=2.4:167
success @ user-meta.js?ver=2.4:130
c @ jquery.min.js:2
fireWith @ jquery.min.js:2
l @ jquery.min.js:2
(anonymous) @ jquery.min.js:2
load (async)
send @ jquery.min.js:2
ajax @ jquery.min.js:2
pfAjaxCall @ user-meta.js?ver=2.4:123
umLogin @ user-meta.js?ver=2.4:166
onsubmit @ (index):151