Read llm model failed: request failed, calling llm language model failed

Failed to transform agent message: req_id: f2c8d8278e PluginInvokeError: {“args”:{},“error_type”:“Exception”,“message”:“read llm model failed: request failed: req_id: b9ba8abe1c PluginInvokeError: {\\"args\\":{},\\"error_type\\":\\"RuntimeError\\",\\"message\\":\\"can’t start new thread\\"}”}
Has anyone seen this error before and found a solution?