NO_USER_OR_ASSISTANT_MESSAGES
Agent
I’m currently using the network routing agent, and occasionally I encounter this error when using GPT-5-latest, which causes the process to stop. Is there any known issue or possible reason that could lead to this error?
This is the input for the network:
[{
"role": "user",
"content": [
{
"type": "text",
"text": "user question",
"image": null,
"mimeType": null,
"result": null,
"selectionReason": null,
"agentName": null,
"toolName": null,
"toolInput": null,
"toolOutput": null
}
]
}]
And this is the error:
Error executing model openai/gpt-5-chat-latest, attempt 1==== 127 | const error = originalError ? getErrorFromUnknown(originalError, {
128 | serializeStack: false,
129 | fallbackMessage: "Unknown error"
130 | }) : void 0;
131 | const message = errorDefinition.text ?? error?.message ?? "Unknown error";
132 | super(message, { cause: error });
^
error: This request does not contain any user or assistant messages. At least one user or assistant message is required to generate a response.
cause: undefined,
id: "NO_USER_OR_ASSISTANT_MESSAGES",
domain: "AGENT",
category: "USER",
details: {},
This is the input for the network:
[{
"role": "user",
"content": [
{
"type": "text",
"text": "user question",
"image": null,
"mimeType": null,
"result": null,
"selectionReason": null,
"agentName": null,
"toolName": null,
"toolInput": null,
"toolOutput": null
}
]
}]
And this is the error:
Error executing model openai/gpt-5-chat-latest, attempt 1==== 127 | const error = originalError ? getErrorFromUnknown(originalError, {
128 | serializeStack: false,
129 | fallbackMessage: "Unknown error"
130 | }) : void 0;
131 | const message = errorDefinition.text ?? error?.message ?? "Unknown error";
132 | super(message, { cause: error });
^
error: This request does not contain any user or assistant messages. At least one user or assistant message is required to generate a response.
cause: undefined,
id: "NO_USER_OR_ASSISTANT_MESSAGES",
domain: "AGENT",
category: "USER",
details: {},
