I get this message when I try to upload to my Arduino Nano avrdude: ser_open(): can't open device "\.\COM3": Access is denied. An error occurred while uploading the sketch Exception in thread "Thread-49" java.util.ConcurrentModificationException at java.util.LinkedList$LLSpliterator.forEachRemai…

Cant Upload to Arduino Nano

system October 5, 2017, 4:36pm 2

(deleted)

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