Hi @Ayush isn't the port 6446 only used for read only? I'm not sure but It can be the cause of the errors, try switch it to the 6447 read/write port that Traccar could add/edit the tables schema, except if you have a reason why to choose the 6446 port.
Thanks, @AntonTananaev, Do you have any guides or something you can share that can help me set up the mysql cluster which is compatible with Traccar and its schema?