When a user clicks the submit button the form is posted and the information is saved in the database. However, the button text hangs on Processing and the user never get confirmation. The console error returns the following
jquery.js?ver=1.12.4-wp:4 POST 500 (Internal Server Error) front-end.js?ver=3.4.31:4951 ERRORS: Internal Server Error front-end.js?ver=3.4.31:4952 {readyState: 4, getResponseHeader: ƒ, getAllResponseHeaders: ƒ, setRequestHeader: ƒ, overrideMimeType: ƒ, …} abort: ƒ (a) always: ƒ () complete: ƒ () done: ƒ () error: ƒ () fail: ƒ () getAllResponseHeaders: ƒ () getResponseHeader: ƒ (a) overrideMimeType: ƒ (a) pipe: ƒ () progress: ƒ () promise: ƒ (a) readyState: 4 responseText: "There has been a critical error on your website" setRequestHeader: ƒ (a,b) state: ƒ () status: 500 statusCode: ƒ (a) statusText: "Internal Server Error" success: ƒ () then: ƒ () __proto__: Object front-end.js?ver=3.4.31:4959 Parse Error front-end.js?ver=3.4.31:2275 Uncaught TypeError: Cannot read property 'nonce' of undefined at i.submitErrors (front-end.js?ver=3.4.31:2275) at p (backbone.min.js?ver=1.4.0:2) at f (backbone.min.js?ver=1.4.0:2) at l (backbone.min.js?ver=1.4.0:2) at u.Channel.n.trigger (backbone.min.js?ver=1.4.0:2) at Object.error (front-end.js?ver=3.4.31:4963) at i (jquery.js?ver=1.12.4-wp:2) at Object.fireWith [as rejectWith] (jquery.js?ver=1.12.4-wp:2) at x (jquery.js?ver=1.12.4-wp:4) at XMLHttpRequest.c (jquery.js?ver=1.12.4-wp:4) jquery.js?ver=1.12.4-wp:4 XHR failed loading: POST "". send @ jquery.js?ver=1.12.4-wp:4 ajax @ jquery.js?ver=1.12.4-wp:4 submit @ front-end.js?ver=3.4.31:4931 u._callHandler @ front-end-deps.js?ver=3.4.31:23 request @ front-end-deps.js?ver=3.4.31:23 click @ front-end.js?ver=3.4.31:2023 p @ backbone.min.js?ver=1.4.0:2 f @ backbone.min.js?ver=1.4.0:2 l @ backbone.min.js?ver=1.4.0:2 n.trigger @ backbone.min.js?ver=1.4.0:2 fieldClick @ front-end.js?ver=3.4.31:4472 dispatch @ jquery.js?ver=1.12.4-wp:3 r.handle @ jquery.js?ver=1.12.4-wp:3 2 Answers
In this case, wordpress was being hosted in an aws environment and the form had an email trigger. Ninja forms was able to save the information but when it handed off the email duties to the smtp plugin it failed by timing out. The solution was to add the smtp connecting port to the aws outbound firewall.
I think you are using a hook, disable that go to functions.php remove line like this
add_action('ninja_forms_after_submission', 'custom_ninja_forms_after_submission', 10, 1); I hope this will fix your issue.
