bug http error 302 after submit

this error is displayed when i submit the form in the first step
<div class=”ajax-error”>Unexpected token < in JSON at position 0</div>

this is the request response in devtools
/wp-json/contact-form-7/v1/contact-forms/2479/feedback
header :
Status Code: 302

responde header :
location: https://www.example.com/form-2-5/

Solution :
in file cf7msm.php
search function cf7msm_mail_sent()
replace
if ( !wpcf7_load_js() || !(defined( ‘REST_REQUEST’ ) && REST_REQUEST) && !(defined( ‘DOING_AJAX’ ) && DOING_AJAX) )
with
if ( !wpcf7_load_js() && !(defined( ‘REST_REQUEST’ ) && REST_REQUEST) && !(defined( ‘DOING_AJAX’ ) && DOING_AJAX) )

I hope this bug will be fixed in the next update