Node red node arduino problem

#1

error%20node%20red%20arduino
Hi, I am using windows 7. as attached in the picture, I have uninstall and reinstall node red for 3 times but this same problem still occur. the serialport module of node red is working fine, but this arduino can't work and keep showing serialport error just like in the picture. is there any way to solve the problem?

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#2

also posted Uninstall Node-Red

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