How to fixed this error in Contact Form & multi step

A

admin

Administrator
Staff member
I`m using Contact form Multi Step plugin in wordpress, i have 5 form and everytime I press the previous button it will not redirect to the previous form

Hi guys Everytime I press the previous button it has an error:

Error:

Code: 
    {"code":"rest_no_route","message":"No route was found matching the URL and 
    request method","data":{"status":404}}

Additional:
And Everytime i submit the thank you message appear
 
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