TypeError: unicode argument expected, got 'str'

[ZDAHWYB]

TypeError: unicode argument expected, got 'str'

[melnarte]

ROS melodic
PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"
python 2.7
when I want to upstart my own package, I write

rosrun robot_upstart install qr_configuration/launch/configuration.launch

then show the error:

/lib/systemd/systemd
Traceback (most recent call last):
File "/path/robot_upstart/scripts/install", line 32, in
exit(main())
File "/path/robot_upstart/src/robot_upstart/install_script.py", line 123, in main
j.install(Provider=provider)
File "/path/robot_upstart/src/robot_upstart/job.py", line 162, in install
installation_files = p.generate_install()
File "/path/robot_upstart/src/robot_upstart/providers.py", line 179, in generate_install
"content": self._fill_template("templates/systemd_job.conf.em"), "mode": 0o644}
File "/path/robot_upstart/src/robot_upstart/providers.py", line 229, in _fill_template
self.interpreter.file(f)
File "/usr/lib/python2.7/dist-packages/em.py", line 2359, in file
self.safe(scanner, done, locals)
File "/usr/lib/python2.7/dist-packages/em.py", line 2401, in safe
self.parse(scanner, locals)
File "/usr/lib/python2.7/dist-packages/em.py", line 2421, in parse
token.run(self, locals)
File "/usr/lib/python2.7/dist-packages/em.py", line 1107, in run
interpreter.write(self.data)
File "/usr/lib/python2.7/dist-packages/em.py", line 2172, in write
self.stream().write(data)
File "/usr/lib/python2.7/dist-packages/em.py", line 538, in write
self.filter.write(data)
TypeError: unicode argument expected, got 'str'