Android sqlite列未找到错误

Ok so I have made the usual Database Helper class as shown below. I’ve also made a class which uses the getData and insertData methods with another class to get specific things, for example with my User class to get User name. However, when calling that Controller class in my main activity I want to use it in, it tells me that the columns I try access don’t exist. I’ve been trying at this for hours now and am getting tired... Ok so I have made the usual Database Helper cla