Stabilize frontend login. Make chat messages multiline.

backend/app.py

@@ -31,7 +31,7 @@ class App:
         if replicate_api_token:
             self.replicate_client = replicate.Client(api_token=replicate_api_token)
         else:
-            raise Exception("Horde only works with a replicate client. Please provide an API Token.")
+            raise Exception("Horde only works with a replicate connection. Please provide an API Token.")
 
         # `Agent` is the kind 'basic', will be class `BasicAgent` in the future
         self.agent_classes = [Agent]
@@ -119,7 +119,7 @@ class App:
 
             if data:
                 # Assign a copy to trigger a value change
-                agent.data = agent.data.copy()
+                agent.data = agent.data.copy() if agent.data else {}
                 agent.data.update(data)
                 summary.extend([f"data.{name}" for name in data.keys()])
 
@@ -335,8 +335,6 @@ if __name__ == "__main__":
         print("No directory specified. Using current directory as default.")
         data_directory = "."
 
-    print("api token", os.getenv('REPLICATE_API_TOKEN'))
-
     app = App(
         data_directory=data_directory,
         replicate_api_token=os.getenv('REPLICATE_API_TOKEN'),