MT5 · Runtime errors
MT5 5802 · Property or value not supported by MQL5 | YI GOLD
ERR_ONNX_NOT_SUPPORTED
Official meaning
Property or value not supported by MQL5
Possible causes · YI GOLD suggestions
Determine the cause from the official meaning, the triggering function and terminal logs.
Troubleshooting · YI GOLD suggestions
Inspect terminal logs and the failing function return value. Check inputs, array bounds, resources, connectivity and required permissions against the official description.