prometheus

[fish big]

$ glances --export prometheus
Traceback (most recent call last):
  File "/usr/bin/glances", line 33, in <module>
    sys.exit(load_entry_point('Glances==3.2.4.2', 'console_scripts', 'glances')())
  File "/usr/lib/python3/dist-packages/glances/__init__.py", line 150, in main
    start(config=core.get_config(), args=core.get_args())
  File "/usr/lib/python3/dist-packages/glances/__init__.py", line 109, in start
    mode = GlancesMode(config=config, args=args)
  File "/usr/lib/python3/dist-packages/glances/standalone.py", line 53, in __init__
    self.stats = GlancesStats(config=config, args=args)
  File "/usr/lib/python3/dist-packages/glances/stats.py", line 49, in __init__
    self.load_modules(self.args)
  File "/usr/lib/python3/dist-packages/glances/stats.py", line 100, in load_modules
    self.load_exports(args=args)
  File "/usr/lib/python3/dist-packages/glances/stats.py", line 175, in load_exports
    export_module = __import__(self._exports_all[export_name])
  File "/usr/lib/python3/dist-packages/glances/exports/glances_prometheus.py", line 29, in <module>
    from prometheus_client import start_http_server, Gauge
ModuleNotFoundError: No module named 'prometheus_client'

Are there no longer any supported modules？