Error when reading PC file (Please check PC)

What causes this issue?

An error occurred while reading the MPX file from the PC.

System Response

INCLUDE 'NA_ALLG_NOFUNKTION' OBJECT DOKU ID TX

How to fix this error?

Check the entries you made on the PC for uploading. For example, did
you enter a directory for the PC that exists?

Error message extract from SAP system. Copyright SAP SE.