Requirements: Add fastchat and override pydantic

Use an older version of pydantic to stay compatible

Signed-off-by: kingbri <bdashore3@proton.me>

main.py

@@ -25,7 +25,7 @@ async def list_models():
     model_config = config["model"]
     models = get_model_list(pathlib.Path(model_config["model_dir"] or "models"))
 
-    return models.model_dump_json()
+    return models.json()
 
 @app.get("/v1/model", dependencies=[Depends(check_api_key)])
 async def get_current_model():
@@ -33,7 +33,7 @@ async def get_current_model():
         return HTTPException(400, "No models are loaded.")
 
     model_card = ModelCard(id=model_container.get_model_path().name)
-    return model_card.model_dump_json()
+    return model_card.json()
 
 @app.post("/v1/model/load", dependencies=[Depends(check_admin_key)])
 async def load_model(data: ModelLoadRequest):
@@ -61,13 +61,13 @@ async def load_model(data: ModelLoadRequest):
                     module=module,
                     modules=modules,
                     status="processing"
-                ).model_dump_json()
+                ).json()
 
         yield ModelLoadResponse(
             module=module,
             modules=modules,
             status="finished"
-        ).model_dump_json()
+        ).json()
 
     return EventSourceResponse(generator())
 
@@ -86,14 +86,14 @@ async def encode_tokens(data: TokenEncodeRequest):
     tokens = model_container.get_tokens(data.text, None, **data.get_params())[0].tolist()
     response = TokenEncodeResponse(tokens=tokens, length=len(tokens))
 
-    return response.model_dump_json()
+    return response.json()
 
 @app.post("/v1/token/decode", dependencies=[Depends(check_api_key)])
 async def decode_tokens(data: TokenDecodeRequest):
     message = model_container.get_tokens(None, data.tokens, **data.get_params())
     response = TokenDecodeResponse(text=message)
 
-    return response.model_dump_json()
+    return response.json()
 
 @app.post("/v1/completions", dependencies=[Depends(check_api_key)])
 async def generate_completion(request: Request, data: CompletionRequest):
@@ -106,14 +106,14 @@ async def generate_completion(request: Request, data: CompletionRequest):
 
                 response = create_completion_response(part, index, model_container.get_model_path().name)
 
-                yield response.model_dump_json()
+                yield response.json()
 
         return EventSourceResponse(generator())
     else:
         response_text = model_container.generate(**data.to_gen_params())
         response = create_completion_response(response_text, 0, model_container.get_model_path().name)
 
-        return response.model_dump_json()
+        return response.json()
 
 if __name__ == "__main__":
     # Initialize auth keys