Square Credit Card Payments - SQ-NONCE-FAILURE

Error Log:
PHP Notice: Exception when calling LocationsApi->listLocations: [HTTP/2 401] {"errors":[{"category":"AUTHENTICATION_ERROR","code":"UNAUTHORIZED","detail":"This request could not be authorized."}]} in /home/***/public_html/shop/includes/modules/payment/square.php on line 703

On-screen error in checkout:
We could not initiate your transaction because of a problem with the card data you entered. Please correct the card data, or report this error to the Store Owner: SQ-NONCE-FAILURE


The fix:
Turn off javascript loading for features in the site not needed in the checkout pages.

Found in:
includes/templates/YOUR_TEMPLATE/common/html_header.php

also may be in tpl_header.php (not in my case with this site)