Hello
WP 4.8
Theme Nisarg

I’ve this error message when a news suscriber enter his email on the form :
Oops! There is a problem with this form:
textStatus:parsererror
errorThrown:SyntaxError: expected expression, got ‘<‘
responseText: jQuery11240891323189189735_1497014220284({“result”:true,”msgs”:{“updated”:[“V\u00e9rifiez votre bo\u00eete de r\u00e9ception ou vos ind\u00e9sirables afin de confirmer votre abonnement.”]}});

The only problem seems to be the error message because emails are registered in the plugin back office.

The theme appears in cause : if I change for twenty twelve the form is working.

Is there a solution to make of ? or repaire Something?