traceback in jail_freebsd

[2021/02/15 12:54:26] (ERROR) middlewared.job.run():379 - Job <bound method PluginService.plugin_updates of <middlewared.plugins.jail_freebsd.PluginService object at 0x81ce9c100>> failed
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/middlewared/job.py", line 367, in run
    await self.future
  File "/usr/local/lib/python3.8/site-packages/middlewared/job.py", line 405, in __run_body
    rv = await self.middleware.run_in_thread(self.method, *([self] + args))
  File "/usr/local/lib/python3.8/site-packages/middlewared/utils/run_in_thread.py", line 10, in run_in_thread
    return await self.loop.run_in_executor(self.run_in_thread_executor, functools.partial(method, *args, **kwargs))
  File "/usr/local/lib/python3.8/site-packages/middlewared/utils/io_thread_pool_executor.py", line 25, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/local/lib/python3.8/site-packages/middlewared/plugins/jail_freebsd.py", line 615, in plugin_updates
    available_version = f'{plugin_dict["epoch"]}!{plugin_git_manifest["revision"]}.' \
KeyError: 'revision'