This is an error report.
Screenshot of the error
Error details
While doing first callback function example in Callbacks module, the error appears while launching the launch file.
This is an error report.
Screenshot of the error
Error details
While doing first callback function example in Callbacks module, the error appears while launching the launch file.
Two things you need to check:
callback_function.py
file executable? If not, you need make it executable with chmod +x
.#!/usr/bin/env python
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