Hello,
I have a similar problems in the “Serial Monitor”. And also the message below:
bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
Indeed there is no en_US.UTF-8 locale on my system, the default is fr_FR.UTF-8.
I have generated en_US.UTF-8 and the problem seems to be gone for now.
The workaround is easy, but why is en_US.UTF-8 hardcoded somewhere?
Thanks a lot for a great tool