Fix missing "to_h" error message on Pawoo sources

app/logical/pawoo_api_client.rb

@@ -50,6 +50,10 @@ class PawooApiClient
     def commentary
       nil
     end
+
+    def to_h
+      json
+    end
   end
 
   class Status
@@ -97,6 +101,10 @@ class PawooApiClient
       commentary << json["content"]
       commentary
     end
+
+    def to_h
+      json
+    end
   end
 
   def get(url)