What does it mean when the middle led turns red in jlink

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    • What does it mean when the middle led turns red in jlink

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      I've got a jlink connected to a mcu. Was running a long duration test, connected through jlink ultra. Was communicating through RTT from laptop. After 30 hours or so, the middle led turned red. Was unable to communicate anymore. I plugged/unplug the part of cable which goes from laptop to jlink. Worked after that.
      What could cause this issue?
      How long can I use jlink continuously? Ideally I would like to remain connected for hundreds of hours.