I have a strange error and cannot fathom what it means.. Help anyone?

The code is simple morse code keyer. It’s works just fine on an Arduino Uno but I get a strange error message when I try to verify it on my core.
The error is “make: *** No rule to make target m0xpd_keyer_w/spd_ctrl.o', needed by2252856ca2dfab50a6f0b95bcb6d26e50ec72af7ee6927129f48df5bcfd6.elf’. Stop.”

Pete

What dev env are you using?
What does your code look like?
Where have you got the library from?

Infos like this may help understand your problem to start with :wink:

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