I have defined class fu_data_t which is used in in another classes crevokeModule and after use crevokeModule in another class AluDataModule…..
and after use AluDataModule in another class….

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whith this structure I get below error.
is it possible to help me how to fix this error?

class crevokeModule extends Module {
   val io = IO(new Bundle() {
   val src = Input(UInt(XLEN.W))
   val crevoke = Output(UInt(XLEN.W))
   val fu_data_cur  = Input(new fu_data_t)
   val rd_result_o  = Output(new cap_result_t )
     
  })
  //  val fu_data_cur  = Wire(new fu_data_t)
  //  val rd_result_o  = Wire(new cap_result_t )

  //  val fu_data_cur  = Module(new fu_data_t)
  //  val rd_result_o  = Module(new cap_result_t )

  //  val fu_data_cur  = IO(Input(new fu_data_t))
  //  val rd_result_o  = IO(Output(new cap_result_t ))
   val rs1_cc=new cap_cc_t
   val rs1_c =new cap_fat_t
   val cap_uncompress_cap=new cap_uncompress
   val cap_compress_cap  =new cap_compress


   rs1_cc.revnode_id := io.fu_data_cur.cap_a(0,30)//31

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