"Uncaught TypeError: period_selector.val is not a function"

Problem with Stripe Payment Subscription not work. Stripe in test mode API. Have webhooks. Woorked before but suddenly not working. I get stuck/ redirected to /pro-site/ with no info and no success payment. I have changed the pro-site URL but changed back when its not worked. Then worked one time and now not woriking.

Chat with you say to write here in the forum and to refer to this:
"Uncaught TypeError: period_selector.val is not a function" console error in checkout.js

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