ModuleNotFoundError: This app has encountered an error

Streamlit Cloud
#1

Hi, When I create new app,I got the following error.

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Thank everyone

#2

This is my Data sources:

#3

Please don’t post code or logs as an image in the forum, this is bad practice.
Also, this does not seem to be the full error message.

  • Does the streamlit app work locally?
  • I am surprised that there is no requirements.txt file, it could be that this is why python libraries are missing in the streamlit runtime.
#4

Oh thank you, my problem is missing request file requirements.txt.

#5

I just had the same error, except with a different module. Can someone explain the ‘requirements.txt’ file that seems to be needed. What should it contain and where should it be placed?

My app runs locally without any issues. I only encountered this error when deploying.

Thank you!

** EDIT **
I have figured it out through this post.

1 Like
#6

@Felix_Pena

#7

Thank you for the heads up! Not sure what happened, but I rebooted the app and it is back up.

#8

Thanks a lot