by Arkadiusz Baryła.
I thought that there may be problems with such a big update jump. So I was updating the platform one after the other (2.4-> 2.5, 2.5-> 2.6, etc., took some time to do it ), up to version 3.1.2.
Nevertheless, this did not prevent me from trouble , but the important point is that I managed to solve them without major losses.