# Dash app not rendering

**URL:** <https://community.plotly.com/t/dash-app-not-rendering/26019>\
**Category:** Dash Python\
**Created:** [July 18, 2019, 7:43am UTC](https://community.plotly.com/t/dash-app-not-rendering/26019 "2019-07-18T07:43:12Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Jason4](https://avatars.discourse-cdn.com/v4/letter/j/a5b964/32.png) [@Jason4](https://community.plotly.com/u/Jason4)\
**Post date:** [July 18, 2019, 7:43am UTC](https://community.plotly.com/t/dash-app-not-rendering/26019/1 "2019-07-18T07:43:12Z")

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Hi guys, i suddenly started having issues with my dash app created with python.When i launch my app i keep getting this error on my browser.

FileNotFoundError: [WinError 2] The system cannot find the file specified: ‘C:\ProgramData\Miniconda3\lib\site-packages\dash\_renderer\prod’

Traceback:

Traceback (most recent call last):  
File “C:\ProgramData\Miniconda3\lib\site-packages\flask\app.py”, line 2328, in **call**  
return self.wsgi\_app(environ, start\_response)  
File “C:\ProgramData\Miniconda3\lib\site-packages\flask\app.py”, line 2314, in wsgi\_app  
response = self.handle\_exception(e)  
File “C:\ProgramData\Miniconda3\lib\site-packages\flask\app.py”, line 1760, in handle\_exception  
reraise(exc\_type, exc\_value, tb)  
File “C:\ProgramData\Miniconda3\lib\site-packages\flask\_compat.py”, line 36, in reraise  
raise value  
File “C:\ProgramData\Miniconda3\lib\site-packages\flask\app.py”, line 2311, in wsgi\_app  
response = self.full\_dispatch\_request()  
File “C:\ProgramData\Miniconda3\lib\site-packages\flask\app.py”, line 1827, in full\_dispatch\_request  
self.try\_trigger\_before\_first\_request\_functions()  
File “C:\ProgramData\Miniconda3\lib\site-packages\flask\app.py”, line 1874, in try\_trigger\_before\_first\_request\_functions  
func()  
File “C:\ProgramData\Miniconda3\lib\site-packages\dash\dash.py”, line 983, in \_setup\_server  
self.\_generate\_scripts\_html()  
File “C:\ProgramData\Miniconda3\lib\site-packages\dash\dash.py”, line 424, in \_generate\_scripts\_html  
)) + self.\_external\_scripts + self.\_collect\_and\_register\_resources(  
File “C:\ProgramData\Miniconda3\lib\site-packages\dash\dash.py”, line 382, in \_collect\_and\_register\_resources  
namespace=resource[‘namespace’]  
File “C:\ProgramData\Miniconda3\lib\site-packages\dash\dash.py”, line 363, in \_relative\_url\_path  
modified = int(os.stat(module\_path).st\_mtime)  
FileNotFoundError: [WinError 2] The system cannot find the file specified: ‘C:\ProgramData\Miniconda3\lib\site-packages\dash\_renderer\prod’

Any help on what is going on here?

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<div class="post-metadata">

**Author:** ![lahashh](https://avatars.discourse-cdn.com/v4/letter/l/3be4f8/32.png) [@lahashh](https://community.plotly.com/u/lahashh)\
**Post date:** [July 19, 2019, 2:09pm UTC](https://community.plotly.com/t/dash-app-not-rendering/26019/2 "2019-07-19T14:09:28Z")

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sounds like your on the wrong python enviroment

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<div class="post-metadata">

**Author:** ![Metariat](https://avatars.discourse-cdn.com/v4/letter/m/a9adbd/32.png) [@Metariat](https://community.plotly.com/u/Metariat)\
**Post date:** [September 3, 2019, 3:26pm UTC](https://community.plotly.com/t/dash-app-not-rendering/26019/3 "2019-09-03T15:26:50Z")

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same problem here, was you able to solve the problem?

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**Author:** ![AbhishekM](https://avatars.discourse-cdn.com/v4/letter/a/dfb087/32.png) [@AbhishekM](https://community.plotly.com/u/AbhishekM)\
**Post date:** [September 17, 2019, 5:00pm UTC](https://community.plotly.com/t/dash-app-not-rendering/26019/4 "2019-09-17T17:00:07Z")

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Same problem, did anyone get the solution?

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**Author:** ![darrenburtont](https://avatars.discourse-cdn.com/v4/letter/d/ac8455/32.png) [@darrenburtont](https://community.plotly.com/u/darrenburtont)\
**Post date:** [November 3, 2019, 6:21pm UTC](https://community.plotly.com/t/dash-app-not-rendering/26019/5 "2019-11-03T18:21:55Z")

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I encountered the same error message. I did some research and went back to the Dash Installation page, [https://dash.plot.ly/installation](https://dash.plot.ly/installation) and noticed the following:

**Note** : starting with dash 0.37.0, dash automatically installs dash-renderer, dash-core-components, dash-html-components, and dash-table, using known-compatible versions of each. You need not and should not install these separately any longer, only dash itself.

I executed these two commands at a Conda promt on Windows 10 to re-install with the latest versions.  
pip install dash==1.4.1  
pip install dash-daq==0.2.1

After that, the problem was resolved.

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**Author:** ![Abdelgawad](https://avatars.discourse-cdn.com/v4/letter/a/3ab097/32.png) [@Abdelgawad](https://community.plotly.com/u/Abdelgawad)\
**Post date:** [May 15, 2020, 12:37pm UTC](https://community.plotly.com/t/dash-app-not-rendering/26019/6 "2020-05-15T12:37:00Z")

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Thanks. This worked for me