bug report

[leeyu891222]

in helper.ModelCache.generate missing a return

should be like this
if self.use_api == "openai": return self.openai_generate(messages)
elif self.use_vllm: return self.vllm_generate(messages)
else: return self.huggingface_generate(messages)

[owoWJY]

it‘s very very useful T^T, thanks