# Bug report

**URL:** <https://discourse.mitmproxy.org/t/bug-report/1193>\
**Category:** Uncategorized\
**Created:** [August 28, 2018, 5:04am UTC](https://discourse.mitmproxy.org/t/bug-report/1193 "2018-08-28T05:04:16Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![miaonagemide](https://avatars.discourse-cdn.com/v4/letter/m/df788c/32.png) [@miaonagemide](https://discourse.mitmproxy.org/u/miaonagemide)\
**Post date:** [August 28, 2018, 5:04am UTC](https://discourse.mitmproxy.org/t/bug-report/1193/1 "2018-08-28T05:04:16Z")

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mitmproxy has crashed!  
Please lodge a bug report at: [https://github.com/mitmproxy/mitmproxy](https://github.com/mitmproxy/mitmproxy)  
Traceback (most recent call last):  
File “e:\python37\lib\site-packages\mitmproxy\proxy\server.py”, line 121, in handle  
root\_layer()  
TypeError: ‘NoneType’ object is not callable

Well, Is this how we lodge a bug report?