In reply to dave_59:
Hi Dave, Thanks for responding,
Yes there are 11 files,
I have compiled every component. Below is the transcript
###############################################################################
project open {C:/Users/AIR-NBH-1/Desktop/APB 3/APB 3}
Loading project APB 3
Compile of apb_agent.sv failed with 2 errors.
Compile of apb_drv.sv failed with 2 errors.
Compile of apb_env.sv failed with 2 errors.
Compile of apb_intf.sv was successful.
Compile of apb_mon.sv failed with 2 errors.
Compile of apb_scb.sv failed with 2 errors.
Compile of apb_seq.sv failed with 2 errors.
Compile of apb_seq_item.sv failed with 2 errors.
Compile of apb_sqr.sv failed with 2 errors.
Compile of apb_test.sv failed with 2 errors.
Compile of design.sv was successful.
Compile of testbench.sv was successful with warnings.
12 compiles, 9 failed with 18 errors.
################################################################################
The error is same as I have sent you in earlier response.
apb_seq_item alsoe failed with the same error.