Options flow handler is broken

[WillCodeForCats]

  File "/config/custom_components/tekmar_482/config_flow.py", line 42, in async_get_options_flow
    return TekmarGatewayOptionsFlowHandler(config_entry)
  File "/config/custom_components/tekmar_482/config_flow.py", line 92, in __init__
    self.config_entry = config_entry
    ^^^^^^^^^^^^^^^^^
AttributeError: property 'config_entry' of 'TekmarGatewayOptionsFlowHandler' object has no setter