3.6.30 breaks all forms due to undefined “el”

3.6.30 also broke my form with the following error:

Uncaught TypeError: this.input_limit.trim is not a function
    at Object.maybeInputLimit (fieldItem.js:219:1)
    at eval (eval at template (underscore.min.js?ver=1.13.4:2:15198), <anonymous>:13:14)
    at e (underscore.min.js?ver=1.13.4:2:15271)
    at Object.renderElement (fieldItem.js:116:1)
    at eval (eval at template (underscore.min.js?ver=1.13.4:2:15198), <anonymous>:32:14)
    at e (underscore.min.js?ver=1.13.4:2:15271)
    at Marionette.Renderer.render (main.js:58:1)
    at n._renderTemplate (front-end-deps.js?ver=3.6.30:20:22925)
    at n.render (front-end-deps.js?ver=3.6.30:20:22571)
    at Jn (underscore.min.js?ver=1.13.4:2:7441)

I’m sorry to hear that you’re experiencing this.

Please contact our Customer Support team, describe the issue, and provide them with the error message and details you’ve shared here. They will be best equipped to assist you further.

Thank you for bringing this to our attention, and we appreciate your understanding as we work to resolve this matter.