Unusual dereference error

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0

So I used the debugger and have found that my program is derefrencing a field in this code segment but I don't see what's wrong and how to fix it.

public String generateWeeklyReport() {
    String weeklyReport;
    String designString = d.toString2();
    String salesString = s.toString2();
    String manaString = mana.toString2();
    String manuString = manu.toString2();
    weeklyReport = "WEEKLY PAY REPORT FOR " + companyName + " COMPANY" + "\n" + "EMPLOYEE    WEEKLY PAY" + "\n"
            + designString + "\n"   + manaString + "\n" + salesString + "\n" + manuString + "\n" + "\n" + 
            "Total payroll: $" + calculateTotalWeeklyPay() + "\n" + "Total number of Managers paid:   " + numManager + "\n"
            + "Total number of Design employees paid:  " + numDesign + "\n" + "Total number of Sales employees paid: " + numSales
            + "\n" + "Total number of Manufacturing employees paid: " + numManufacturing;

    return weeklyReport;
}

and it is pointing to these two lines which I don't understand why the other two lines don't get the error aswell.

String manaString = mana.toString2();
String manuString = manu.toString2();

I don't see what the error is here is the mana and manu are of two classes btw.Basically what is the problem and how do I fix it I've been looking for hours. Thank you for your help.

I can post the Manager(mana) and Manufacturing(manu) classes if problem is from those.

asked 1 min ago

user3530205

5