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Returns an error when an operation is cancelled before completion. Fox example by a time-out or stop of service.
This function does not generate an event.
cancelled_err([message])
Argument | Type | Description |
---|---|---|
message | str (optional) | Alternative error message. |
An error value.
This code shows cancelled_err():
cancelled_err();
Return value in JSON format
{
"!": "cancelled_err()",
"error_code": -64,
"error_msg": "operation is cancelled before completion"
}