Hook error for monitors_relation_joined: FileNotFoundError for nrpe_exporter-amd64

[sed-i]

Charm went into error status in the following deployment:

series: jammy
applications:
  cp:
    charm: cos-proxy
    channel: edge
    revision: 70
    num_units: 1
  nrpe:
    charm: nrpe
    channel: edge
    revision: 117
  ub2:
    charm: ubuntu
    channel: edge
    revision: 24
    num_units: 1
relations:
- - cp:monitors
  - nrpe:monitors
- - nrpe:general-info
  - ub2:juju-info

unit-cp-0: 14:06:22.282 DEBUG unit.cp/0.juju-log monitors:16: ops 2.11.0.dev0 up and running.
unit-cp-0: 14:06:22.302 DEBUG unit.cp/0.juju-log monitors:16: Emitting Juju event monitors_relation_joined.
unit-cp-0: 14:06:22.325 ERROR unit.cp/0.juju-log monitors:16: Uncaught exception while in charm code:
Traceback (most recent call last):
  File "/var/lib/juju/agents/unit-cp-0/charm/./src/charm.py", line 498, in <module>
    main(COSProxyCharm)
  File "/var/lib/juju/agents/unit-cp-0/charm/venv/ops/main.py", line 456, in main
    _emit_charm_event(charm, dispatcher.event_name)
  File "/var/lib/juju/agents/unit-cp-0/charm/venv/ops/main.py", line 144, in _emit_charm_event
    event_to_emit.emit(*args, **kwargs)
  File "/var/lib/juju/agents/unit-cp-0/charm/venv/ops/framework.py", line 352, in emit
    framework._emit(event)
  File "/var/lib/juju/agents/unit-cp-0/charm/venv/ops/framework.py", line 865, in _emit
    self._reemit(event_path)
  File "/var/lib/juju/agents/unit-cp-0/charm/venv/ops/framework.py", line 955, in _reemit
    custom_handler(event)
  File "/var/lib/juju/agents/unit-cp-0/charm/./src/charm.py", line 203, in _nrpe_relation_joined
    self._setup_nrpe_exporter()
  File "/var/lib/juju/agents/unit-cp-0/charm/./src/charm.py", line 216, in _setup_nrpe_exporter
    st.chmod(st.stat().st_mode | stat.S_IEXEC)
  File "/usr/lib/python3.10/pathlib.py", line 1097, in stat
    return self._accessor.stat(self, follow_symlinks=follow_symlinks)
FileNotFoundError: [Errno 2] No such file or directory: 'nrpe_exporter-amd64'

[sed-i]

Duplicate of #124. Closing.