Workflow import error: "Cannot read properties of undefined" after uploading .xlsx-related file

I created a workflow on my free account and then exported it as a file. Later, I tried importing it again, but upon activation, I got this error:

Workflow could not be activated:
There was a problem activating the workflow:
“Cannot read properties of undefined (reading ‘application/vnd.openxmlformats-officedocument.spreadsheetml.sheet’)”

:white_check_mark: Any idea how to fix this or what I should check inside the workflow or modules?

Hello @Abdul_Moiz and welcome to the community.

Could you embed your workflow into the post please?

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