Hello,
The Mcl_DmaMux.h seems to be redundant. My suggestion is you need to delete all the files in cfg/include and cfg/src folder, then copy all files from Tresos\workspace\MCAL_SampleApplication\output\include to cfg/include and Tresos\workspace\MCAL_SampleApplication\output\src to cfg/src folder, so the generated files are always up to date.
Best Regards,
Nam