Verify withings config (#26698)

homeassistant/components/withings/config_flow.py

@@ -88,7 +88,10 @@ class WithingsFlowHandler(config_entries.ConfigFlow):
 
     async def async_step_user(self, user_input=None):
         """Create an entry for selecting a profile."""
-        flow = self.hass.data.get(DATA_FLOW_IMPL, {})
+        flow = self.hass.data.get(DATA_FLOW_IMPL)
+
+        if not flow:
+            return self.async_abort(reason="no_flows")
 
         if user_input:
             return await self.async_step_auth(user_input)

homeassistant/components/withings/strings.json

@@ -12,6 +12,9 @@
     },
     "create_entry": {
       "default": "Successfully authenticated with Withings for the selected profile."
+    },
+    "abort": {
+      "no_flows": "You need to configure Withings before being able to authenticate with it. Please read the documentation."
     }
   }
-}
+}