FPC with major error alarm:

root@router1> show chassis alarms no-forwarding

1 alarms currently active

Alarm time        Class Description

2024-02-29 19:15:35 UTC Major FPC 7 Major Errors

FPC shows UP:

FPC 7      REV 28  750-071976  BCCY6466     LC1101 - 30C / 30Q / 96X

 CPU           BUILTIN   BUILTIN      FPC CPU

 PIC 0          BUILTIN   BUILTIN      30x100GE/30x40GE/96x10GE

  Xcvr 0    REV 01  740-061409  1G3TQAA63409G   QSFP-100GBASE-LR4-T2

  Xcvr 1    REV 01  740-061409  1G3TQAA6340V3   QSFP-100GBASE-LR4-T2

  Xcvr 2    REV 01  740-061409  1G3TQAA63400D   QSFP-100GBASE-LR4-T2

  Xcvr 4    REV 01  740-061409  1G3TQAA6340VW   QSFP-100GBASE-LR4-T2

...

It has not flapped in 525 days:

Slot 7 information:

 State                Online

 Total CPU DRAM         16384 MB

 Temperature           45 degrees C / 113 degrees F

 Start time             2022-09-22 19:40:49 UTC

 Uptime               525 days, 2 hours, 25 minutes, 45 seconds<<<<<<<<<<<<

 Max power consumption      890 Watts

Found these logs:

Feb 29 19:07:39 2024 fpc7 fpc7 ppcfpc-multi-svcs.elf: cp_msg_parser Returned 

Feb 29 19:15:35 2024 fpc7 Error: /fpc/7/pfe/0/cm/0/Host_Loopback/0/HOST_LOOPBACK_MAKE_CMERROR_ID[8] (0x20009), scope: pfe, category: functional, severity: major, module: Host Loopback, type: Host Loopback Path Id 8 

Feb 29 19:15:35 2024 fpc7 Performing action get-state for error /fpc/7/pfe/0/cm/0/Host_Loopback/0/HOST_LOOPBACK_MAKE_CMERROR_ID[8] (0x20009) in module: Host Loopback with scope: pfe category: functional level: major 

Feb 29 19:15:35 2024 fpc7 Performing action cmalarm for error /fpc/7/pfe/0/cm/0/Host_Loopback/0/HOST_LOOPBACK_MAKE_CMERROR_ID[8] (0x20009) in module: Host Loopback with scope: pfe category: functional level: major 

Feb 29 19:15:35 2024 fpc7 Cmerror Op Set: Host Loopback: HOST LOOPBACK WEDGE DETECTED IN PATH ID 8  

Feb 29 19:33:06 2024 fpc7 fpc7 ppcfpc-multi-svcs.elf: #012cp_msg_parser: Entered 

reboot/reseat FPC and this should solve the error.