trying removing Collection as return type

main.py

@@ -128,12 +128,12 @@ def list_collections():
     return bkend.list_collections()
 
 @app.post(api_base+"/collections")
-def create_collection( collection: CreateCollection ) -> Collection:
+def create_collection( collection: CreateCollection ) :
     print("Received request to create_collection")
     return bkend.create_collection(name=collection.name,metadata=collection.metadata,embedding_function=embedding_function,get_or_create=collection.get_or_create)
 
 @app.get(api_base+"/collections/{collection_name}")
-def get_collection( collection_name: str) -> Collection:
+def get_collection( collection_name: str) :
     print("Received get_collection request")
     return bkend.get_collection(collection_name,embedding_function=embedding_function)