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via Stack Overflow by Martyn
, 1 year ago
java.lang.NullPointerException: 	at biz.martyn.budget.CategoryComboBox.update(	at biz.martyn.budget.CategoryComboBox.(	at biz.martyn.budget.NewTransactionDialog.(	at biz.martyn.budget.TransactionsToolbar.(	at biz.martyn.budget.Budget.main(