Fixed crashing on facebook connector

__init__.py

@@ -63,12 +63,17 @@ async def api_conversation(opsdroid, config, message):
     connector_matrix - the object obtained from opsdroid.get_connector
     """
     # Get connector_matrix object and start the typing notification
+    try:
         if message.connector.name == "matrix":
             connector_matrix = opsdroid.get_connector("matrix")
             await connector_matrix.connection.room_typing(message.target,
                                                           typing_state=True)
+    except (NameError,KeyError):
+        pass
+
     api_to_use = None
 
+    try:
         if message.connector.name == "matrix" and 'm.relates_to' in message.raw_event['content']:
             # Load conversation_context for current thread_id if it exists
             question_text = message.text
@@ -95,6 +100,9 @@ async def api_conversation(opsdroid, config, message):
                 return
             # Generate empty conversation_context
             conversation_context = {"api_to_use": api_to_use}
+    except (NameError,KeyError):
+        pass
+
 
     api_params = config.get("apis")[api_to_use]
 
@@ -108,6 +116,7 @@ async def api_conversation(opsdroid, config, message):
     except KeyError:
         response_value = "No such response key was found. Check configuration"
 
+    try:
         if message.connector.name == "matrix":
             # Construct and send a response and save conversation context for matrix
             message_dict = {
@@ -131,3 +140,6 @@ async def api_conversation(opsdroid, config, message):
         else:
             # For non-matrix connectors send a response
             await message.respond(response_value)
+
+    except (NameError,KeyError):
+        pass