Help deploying my first app in Shiny for Python

I am trying to deploy a very simple shiny app using python. I previously got it working but now I keep getting an error "[ERROR]: Application deployment failed with error: Unhandled Exception: Child Task 1345041128 failed: Error building image: Build exited with non-zero status: 1".

Can anyone please help me with this? It is so simple and I just want to get one small app up and running but I've been stuck for the past 3 weeks