Error handling request

I have the following message in my log. Don't know what the cause is not how to resolve it. Konnected board seems to work as expected.

Log Details (ERROR)

Thu May 30 2019 18:57:18 GMT+0200 (Central European Summer Time)

Error handling request

 

Traceback (most recent call last):
  File "/usr/local/lib/python3.7/site-packages/aiohttp/web_protocol.py", line 418, in start
    resp = await task
  File "/usr/local/lib/python3.7/site-packages/aiohttp/web_app.py", line 458, in _handle
    resp = await handler(request)
  File "/usr/local/lib/python3.7/site-packages/aiohttp/web_middlewares.py", line 119, in impl
    return await handler(request)
  File "/usr/local/lib/python3.7/site-packages/homeassistant/components/http/real_ip.py", line 33, in real_ip_middleware
    return await handler(request)
  File "/usr/local/lib/python3.7/site-packages/homeassistant/components/http/ban.py", line 68, in ban_middleware
    return await handler(request)
  File "/usr/local/lib/python3.7/site-packages/homeassistant/components/http/auth.py", line 216, in auth_middleware
    return await handler(request)
  File "/usr/local/lib/python3.7/site-packages/homeassistant/components/http/view.py", line 115, in handle
    result = await result
  File "/usr/local/lib/python3.7/site-packages/homeassistant/components/konnected/__init__.py", line 428, in get
    format('Switch on pin {} not configured', pin_num),
TypeError: format() argument 2 must be str, not int