Three different nodes crashed with the same error

2021-12-08 01:44:38.484 [INF] CMGR: Connecting to [2a01:4f9:6a:1b23::2]:16111
2021-12-08 01:44:38.661 [INF] PROT: IBD started
2021-12-08 01:44:38.705 [INF] PROT: Downloading headers from <084146972b65c846c4ea8a41b865ecc6: 157.90.212.112:16111>
2021-12-08 01:44:39.498 [INF] CMGR: Connecting to [2a00:1e10:226:2:84b7:b1fe:ff1:946b]:16111
2021-12-08 01:44:40.503 [INF] CMGR: Connecting to [2001:14ba:3fe:9600:ed31:9795:b0e4:4637]:16111
2021-12-08 01:44:40.569 [INF] PROT: IBD finished (interrupted)
2021-12-08 01:44:40.570 [CRT] PROT: Exiting: Fatal error in goroutine `flow-HandleRelayInvs 35`: not found