UCD3138: UCD3138 firmware error when compiling or saving

Hello, when I compile or save the UCD3138 firmware, I get the above error.
I do not know how to correct this mistake?

When I compile again, the error disappears, but it feels that the compile time is much shorter than before, only the Console column

**** Build of configuration UCD3138 for project UCD3138HSFBEVM_029 ****

"D:\\ti\\ccsv6\\utils\\bin\\gmake" -k all
(rm device_id.obj) & (perl ../../build_scripts/create_date_dot_h_CCS5.pl)
Makefile:204: recipe for target 'pre-build' failed
'rm' is not an internal or external command, nor is it a runnable program
Or batch file.
'perl' is not an internal or external command, nor is it a runnable program
Or batch file.
Gmake[1]: [pre-build] Error 1 (ignored)
''
Gmake[1]: Nothing to be done for 'main-build'.

**** Build Finished ****

I don't know why this is because I feel that the compiler is not working properly.

At the beginning of the compilation error, as shown above, I click on "save as UTF-8", and then the above situation occurs.

I don't know if it's related to this, and I don't know which one to choose "encoding"?

I deleted the UCD3138 full-bridge hard-switch firmware project and added it again.
The problem seems to be solved and it is back to normal.
But I do not know why this is?