Running beat databases create myiris/1 will result in:

Traceback (most recent call last):
  File "/home/amir/miniconda/envs/beat-tutorial/bin/beat", line 11, in <module>
    sys.exit(main())
  File "/home/amir/miniconda/envs/beat-tutorial/lib/python3.7/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/home/amir/miniconda/envs/beat-tutorial/lib/python3.7/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/home/amir/miniconda/envs/beat-tutorial/lib/python3.7/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/amir/miniconda/envs/beat-tutorial/lib/python3.7/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/home/amir/miniconda/envs/beat-tutorial/lib/python3.7/site-packages/beat/cmdline/click_helper.py", line 121, in invoke
    return super().invoke(ctx)
  File "/home/amir/miniconda/envs/beat-tutorial/lib/python3.7/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/home/amir/miniconda/envs/beat-tutorial/lib/python3.7/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/home/amir/miniconda/envs/beat-tutorial/lib/python3.7/site-packages/click/decorators.py", line 21, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/home/amir/miniconda/envs/beat-tutorial/lib/python3.7/site-packages/beat/cmdline/decorators.py", line 92, in _decorator
    value = view_func(*args, **kwargs)
  File "/home/amir/miniconda/envs/beat-tutorial/lib/python3.7/site-packages/beat/cmdline/commands.py", line 162, in create_impl
    return common.create(config.path, asset_info.asset_type, names)
  File "/home/amir/miniconda/envs/beat-tutorial/lib/python3.7/site-packages/beat/cmdline/common.py", line 1009, in create
    obj = TYPE_VALIDATOR[asset_type](prefix, data=None)  # the default object
  File "/home/amir/miniconda/envs/beat-tutorial/lib/python3.7/site-packages/beat/core/database.py", line 131, in __init__
    super(Database, self).__init__(prefix, data, dataformat_cache)
  File "/home/amir/miniconda/envs/beat-tutorial/lib/python3.7/site-packages/beat/backend/python/database.py", line 264, in __init__
    self._load(name, dataformat_cache)
  File "/home/amir/miniconda/envs/beat-tutorial/lib/python3.7/site-packages/beat/core/database.py", line 167, in _load
    self.prefix
  File "/home/amir/miniconda/envs/beat-tutorial/lib/python3.7/site-packages/beat/core/database.py", line 69, in get_first_procotol_template
    raise RuntimeError("Invalid prefix content, no protocol template available")
RuntimeError: Invalid prefix content, no protocol template available