[Bug] Callback function launch error

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:

  1. Is your callback_function.py file executable? If not, you need make it executable with chmod +x.
  2. Do you have this at the top of the file? If not, add it
#!/usr/bin/env python

This topic was automatically closed 5 days after the last reply. New replies are no longer allowed.