Arduino web editor has always worked fine for me, but this afternoon it has suddenly started giving an error when I try to verify my codes, even the most basic. This is extremely frustrating as the same codes had worked fine just a few hours before, and I am working on a time-pressured project. If I switch the selected board/port (from arduino uno, which I have) it works for some. The error is:
''lto1: fatal error: bytecode stream generated with LTO version 3.0 instead of the expected 4.1
lto-wrapper: fatal error: ./opt/tools/avr-gcc/5.4.0-atmel3.6.1-arduino2/bin/avr-gcc returned 1 exit status
/home/ubuntu/opt/tools/avr-gcc/5.4.0-atmel3.6.1-arduino2/bin/../lib/gcc/avr/5.4.0/../../../../avr/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status
exit status 1''
Any help would be appreciated.