lto1: internal compiler error: cannot read LTO decls from .pio/build/uno/src/main.cpp.o
libbacktrace could not find executable to open
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
lto-wrapper: fatal error: avr-g++ returned 1 exit status
compilation terminated.
/Users/edwardkim/.platformio/packages/toolchain-atmelavr/bin/../lib/gcc/avr/7.3.0/../../../../avr/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status
*** [.pio/build/uno/firmware.elf] Error 1
================================================================= [FAILED] Took 1.43 seconds =================================================================
...