Fifo compile question

[BoChen-Ye]

when I run commond ./OpenSMART -c, I got the error as follow:
Error: Unknown position: (S0090) Expected to find package FIFO' in the file ./build/FIFO.bo', found Fifo'.
Error: Command line: (S0040)
No elaboration file (.ba) was found for the top-level module mkTestBench'.

I don't know how to fix it. And I also have warning
Warning: "FIFO.bs", line 1, column 8: (S0089) Multiple copies of a file were found in the path. Using: ./build/FIFO.bo Ignoring: /mnt/d/BSV/bsc/lib/Libraries/FIFO.bo

[BoChen-Ye]

If someone know the solution, plz tell me asap. ThX!