processing.app.SerialException: Error opening serial port 'COM9'.
at processing.app.Serial.<init>(Serial.java:125)
at processing.app.Serial.<init>(Serial.java:66)
at processing.app.SerialMonitor$3.<init>(SerialMonitor.java:93)
at processing.app.SerialMonitor.open(SerialMonitor.java:93)
at processing.app.AbstractMonitor.resume(AbstractMonitor.java:110)
at processing.app.Editor.resumeOrCloseSerialMonitor(Editor.java:2479)
at processing.app.Editor.access$3100(Editor.java:85)
at processing.app.Editor$DefaultExportHandler.run(Editor.java:2457)
at java.lang.Thread.run(Thread.java:745)
Caused by: jssc.SerialPortException: Port name - COM9; Method name - openPort(); Exception type - Port not found.
at jssc.SerialPort.openPort(SerialPort.java:167)
at processing.app.Serial.<init>(Serial.java:114)
... 8 more
Error opening serial port 'COM9'.