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What should be done to solve it?
I have edited the board.txt file and none of my codes are getting verified
it shows this error:
"Error reading file (C:\Program Files (x86)\Arduino\hardware\arduino\avr\boards.txt:0): Invalid line format, should be 'key=value' "
You can either reinstall the Arduino IDE (it will replace the file), or copy the original code back in the file (if you have a copy somewhere).
See the link: https://code.google.com/archive/p/arduino/wikis/Platforms.wiki for more background in case you are interested.
(note: I cannot copy the content of the file in the answer since it is more than 30000 characters.)
