Why is "controller stop automation request" terminating my runs?

Right when the run is starting, the worklist stops and the message comes up "G7167A:DEACI00598 - Controller stop automation request, G1316A:DEAES40596 - Controller stop automation request". The corresponding devices do not show the red error light, but the yellow not ready light. This is for an Agilent 1260 Infinity II system.

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