jquery - Getting NoneType error on form submit with ajax -

i have problem when submit form through pressing enter.

this how js code looks like:

  $.fn.api.settings.api = {     'password_reset': '/account/password_reset/'   }    $('.ui.form')     .form({       fields: {         email:  'empty'       }     })     .api({       action: 'password_reset',       method: 'post',       serializeform: true,       onsuccess: function () {         $('.page.dimmer').dimmer('show');         console.log('success')       }     })   ; 

if press submit button, works alright, if submit form pressing enter, in console get:

[18/aug/2017 21:05:20] "post /account/password_reset/ http/1.1" 200 6 traceback (most recent call last):   file "c:\users\mihai\miniconda3\lib\wsgiref\handlers.py", line 138, in run     self.finish_response()   file "c:\users\mihai\miniconda3\lib\wsgiref\handlers.py", line 180, in finish_response     self.write(data)   file "c:\users\mihai\miniconda3\lib\wsgiref\handlers.py", line 274, in write     self.send_headers()   file "c:\users\mihai\miniconda3\lib\wsgiref\handlers.py", line 332, in send_headers     self.send_preamble()   file "c:\users\mihai\miniconda3\lib\wsgiref\handlers.py", line 255, in send_preamble     ('date: %s\r\n' % format_date_time(time.time())).encode('iso-8859-1')   file "c:\users\mihai\miniconda3\lib\wsgiref\handlers.py", line 453, in _write     result = self.stdout.write(data)   file "c:\users\mihai\miniconda3\lib\socket.py", line 593, in write     return self._sock.send(b) connectionabortederror: [winerror 10053] established connection has been dropped software on host computer  during handling of above exception, exception occurred:  traceback (most recent call last):   file "c:\users\mihai\miniconda3\lib\wsgiref\handlers.py", line 141, in run     self.handle_error()   file "c:\users\mihai\desktop\dev_place\env\lib\site-packages\django\core\servers\basehttp.py", lin e 88, in handle_error     super(serverhandler, self).handle_error()   file "c:\users\mihai\miniconda3\lib\wsgiref\handlers.py", line 368, in handle_error     self.finish_response()   file "c:\users\mihai\miniconda3\lib\wsgiref\handlers.py", line 180, in finish_response     self.write(data)   file "c:\users\mihai\miniconda3\lib\wsgiref\handlers.py", line 274, in write     self.send_headers()   file "c:\users\mihai\miniconda3\lib\wsgiref\handlers.py", line 331, in send_headers     if not self.origin_server or self.client_is_modern():   file "c:\users\mihai\miniconda3\lib\wsgiref\handlers.py", line 344, in client_is_modern     return self.environ['server_protocol'].upper() != 'http/0.9' typeerror: 'nonetype' object not subscriptable  during handling of above exception, exception occurred:  traceback (most recent call last):   file "c:\users\mihai\miniconda3\lib\socketserver.py", line 625, in process_request_thread     self.finish_request(request, client_address)   file "c:\users\mihai\miniconda3\lib\socketserver.py", line 354, in finish_request     self.requesthandlerclass(request, client_address, self)   file "c:\users\mihai\miniconda3\lib\socketserver.py", line 681, in __init__     self.handle()   file "c:\users\mihai\desktop\dev_place\env\lib\site-packages\django\core\servers\basehttp.py", lin e 155, in handle     handler.run(self.server.get_app())   file "c:\users\mihai\miniconda3\lib\wsgiref\handlers.py", line 144, in run     self.close()   file "c:\users\mihai\miniconda3\lib\wsgiref\simple_server.py", line 36, in close     self.status.split(' ',1)[0], self.bytes_sent attributeerror: 'nonetype' object has no attribute 'split' 

attributeerror: 'nonetype' object has no attribute 'split'

why getting error pressing enter?

also, i'm not getting 'success' message in console.

i use: django 11.1, jquery 3.2.1, semantic-ui 2.2, jquery serializeobject 2.5.0 (for serializeform). windows 8.1

edit: set debug true , started errors: xhr aborted (most caused page navigation or cors policy)

i noticed connectionabortederror: [winerror 10053] established connection has been dropped software on host computer in traceback call.

i haven't figured out yet.

what can do?

thanks in advance answers!

i found solution.

the problem when press enter, .preventdefault() not called.

a person on github came with:

$("#form").keypress(function(event) {         if (event.which == 13) {             event.preventdefault();         }     }); 

now it's working fine, wow, huge error preventdefault().