This error looks more like a Transmission heat up issue, normally the Transmission oil is used to lubricate the dual-clutch transmission for smooth shifting, which normally heats up in the hot humid weather or in stop-and-go traffic, and because of that abnormal shifting occurs or transmission doesn't shift at all, it's very common in Dual-Clutch Transmissions. Sometimes, the problem goes away by simply replacing the transmission fluid, but sometimes if the problem persists, I'm afraid that the transmission of your Alsvin needs to be replaced or repaired, most probably replaced, because repairing is not an option if the transmission got damaged at a certain point.
I hope it helps.