Nion N6 randomly muting/unmuting

We have 2 Nion N6s linked and they muted in the middle of a performance this past Sunday. Tried restarting and they operating normally for about 20min and then muted again. The next day, powered on and ran the system for 6-7hrs and around 6 hours in system muted for about 3 second and then unmuted again. Anyone have any idea what might be happening? See the log below. Thank you!

12/31/2018 3:05:40    83752    note    piond/mute    unmuted
12/31/2018 3:05:37    83751    note    piond/mute    muted: missing: dsp02
12/30/2018 21:44:52    83750    note    piond/mute    unmuted
12/30/2018 21:44:45    83749    note    piond/mute    muted: muted: dsp02
12/30/2018 21:44:45    83748    note    piond/mute    unmuted
12/30/2018 21:44:44    83747    note    piond/mute    muted: xdab reconfiguration
12/30/2018 0:49:27    83746    note    piond/mute    unmuted
12/30/2018 0:49:25    83745    note    piond/xdab/leader    poll returned false: 'dsp01'
12/30/2018 0:49:25    83744    error    piond/xdab/manager    loss of clock error
12/30/2018 0:49:15    83743    note    piond/xdab/leader    arbitration done; ring is incomplete in redundant failed mode
12/30/2018 0:49:15    83742    note    piond/xdab/leader    finaly unmuting after repeated failures
12/30/2018 0:49:05    83741    error    piond/xdab/leader    communication failure
12/30/2018 0:48:55    83740    note    piond/mute    muted: xdab reconfiguration
12/30/2018 0:48:55    83739    note    piond/mute    unmuted
12/30/2018 0:48:53    83738    note    piond/mute    muted: xdab reconfiguration
12/30/2018 0:45:19    83737    note    piond/mute    unmuted
12/30/2018 0:45:17    83736    note    piond/mute    muted: muted: dsp02
12/30/2018 0:44:28    83735    note    piond/mute    unmuted
12/30/2018 0:44:21    83734    note    piond/version    Audio network module Peavey NION CobraNet version 2.9.16 CM-1(a) rev 3
12/30/2018 0:44:21    83733    note    piond/version    Firmware version release_1.6.6a
12/30/2018 0:44:20    83732    note    piond/role_manager    role is running
12/30/2018 0:43:50    83731    note    piond/role_manager    restarting role : Grace Covenant DSP 102714/dsp01/rdJNqqy7kbAZX1i265Im+9VEBZS/pbnC04Q92XsysASwDpvtUpoxdA4
12/30/2018 0:43:44    83729    note    piond/time    Sun Dec 30 00:43:44 2018 CST, Sun Dec 30 06:43:44 2018 UTC
12/30/2018 0:43:31    83725    note    mcp    potential reboot event logged from power : power fail
12/30/2018 0:43:31    83724    note    mcp/monitor    system boot
12/30/2018 0:42:33    83720    note    piond/mute    muted: mcp mute request
12/30/2018 0:42:33    83719    note    mcp/processes    shutting down gracefully
12/30/2018 0:41:16    83718    note    piond/mute    unmuted
12/30/2018 0:41:14    83717    note    piond/xdab/leader    poll returned false: 'dsp01'
12/30/2018 0:41:14    83716    error    piond/xdab/manager    loss of clock error
12/30/2018 0:41:04    83715    note    piond/xdab/leader    arbitration done; ring is incomplete in redundant failed mode
12/30/2018 0:41:04    83714    note    piond/xdab/leader    finaly unmuting after repeated failures
12/30/2018 0:40:54    83713    error    piond/xdab/leader    communication failure
12/30/2018 0:40:52    83712    note    piond/mute    muted: xdab reconfiguration
12/30/2018 0:40:44    83711    note    piond/mute    unmuted
12/30/2018 0:39:28    83710    note    piond/mute    muted: muted: dsp02
12/30/2018 0:38:06    83709    note    piond/mute    unmuted
12/30/2018 0:37:58    83708    note    piond/mute    muted: xdab reconfiguration
12/30/2018 0:37:58    83707    note    piond/mute    unmuted
12/30/2018 0:37:35    83706    note    piond/mute    muted: muted: dsp02
12/30/2018 0:37:34    83705    note    piond/mute    unmuted
12/30/2018 0:37:32    83704    note    piond/mute    muted: xdab reconfiguration
12/30/2018 0:37:30    83703    note    piond/mute    unmuted
12/30/2018 0:11:34    83702    note    piond/xdab/leader    poll returned false: 'dsp01'
12/30/2018 0:11:34    83701    error    piond/xdab/manager    OUT port loss of link error
12/30/2018 0:10:23    83700    note    piond/xdab/leader    arbitration done; ring is incomplete in redundant failed mode
12/30/2018 0:10:15    83699    note    piond/xdab/leader    poll returned false: 'dsp01'
12/30/2018 0:10:11    83698    note    piond/xdab/leader    arbitration done; ring is incomplete in redundant failed mode
12/30/2018 0:10:05    83697    note    piond/xdab/leader    poll returned false: 'dsp01'
12/30/2018 0:04:20    83696    note    piond/xdab/leader    arbitration done; ring is incomplete in redundant failed mode
12/30/2018 0:04:07    83695    note    piond/xdab/leader    arbitration done; ring is incomplete in redundant failed mode
12/30/2018 0:04:07    83694    note    piond/xdab/leader    finaly unmuting after repeated failures
12/30/2018 0:03:52    83693    error    piond/xdab/leader    communication failure
12/30/2018 0:03:13    83692    note    piond/mute    muted: muted: dsp02
12/30/2018 0:03:09    83691    note    piond/mute    unmuted
12/30/2018 0:03:09    83690    note    piond/mute    muted: missing: dsp02