我有以下单元测试：

@InjectMocks
private PaymentTicketService paymentTicketService;

@Test
public void blahblahTest() {

    ...

    String spokesmanDocumentNumber = "47246536809";
    PaymentTicketPdfResponse paymentTicketPdfResponse = Fixture.from(...).gimme(...);
   
    when(paymentTicketService.generatePaymentTicket(any(GeneratePaymentTicketRequest.class), spokesmanDocumentNumber)).thenReturn(paymentTicketPdfResponse);

    ...
}

字符串
测试方法是这样的：

public PaymentTicketPdfResponse generatePaymentTicket(GeneratePaymentTicketRequest generateBankTicketRequest, String spokesmanDocumentNumber) {
    ...
}

型
我在测试的'when'子句中得到一个Misplaced or misused argument matcher detected错误。它说我不能在验证或存根之外使用参数匹配器。我真的不明白这个错误，因为我传递任何（GeneratePaymentTicketRequest.class）和一个实际字符串到模拟的方法。
我哪里做错了？