Library mDash has been declared precompiled:
Using precompiled library in /Users/XXXX/Documents/Arduino/libraries/mDash/src/esp32
The plaform does not support ‘compiler.libraries.ldflags’ for precompiled libraries.
sketch/test01.ino.cpp.o:(.literal._Z5setupv+0x90): undefined reference to `mDashInit’
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Currently without further context it doesnt men too much to me.