Getting error isError1 and resultTwo variable does not exist.

    public boolean isError1{get;set;}
    public String resultTwo;
    AuraEnabled(cacheable=true)
    public static string We(){
        resultTwo='hello';
        isError1=true;
        return resultTwo;
    }
}```

Getting error isError1 and resultTwo variable does not exist.

public with sharing class erw {
    public boolean isError1{get;set;}
    public String resultTwo;
    AuraEnabled(cacheable=true)
    public static string We(){
        resultTwo='hello';
        isError1=true;
        return resultTwo;
    }
}