S19J Pro & no board pluged in socket...

hi

what does it mean (while asic initialized)? it's a "bad news"? what i must check?

(harvesting is ok, all chips are green, hashrate in normal range)

2000-01-01 00:00:10 opt_multi_version     = 1
2000-01-01 00:00:10 opt_bitmain_ab        = 1
2000-01-01 00:00:10 mid_auto_gen          = 1
2000-01-01 00:00:10 opt_bitmain_work_mode = 0
2000-01-01 00:00:10 port 51 already exported
2000-01-01 00:00:10 port 49 already exported
2000-01-01 00:00:10 port 48 already exported
2000-01-01 00:00:10 port 60 already exported
2000-01-01 00:00:10 port 47 already exported
2000-01-01 00:00:10 port 27 already exported
2000-01-01 00:00:10 port 44 already exported
2000-01-01 00:00:10 port 22 already exported
2000-01-01 00:00:10 no board pluged in socket 44
2000-01-01 00:00:10 port 23 already exported
2000-01-01 00:00:10 port 45 already exported
2000-01-01 00:00:10 port 46 already exported
2000-01-01 00:00:10 port 26 already exported
2000-01-01 00:00:10 Note: front fan is power on!
2000-01-01 00:00:10 Note: rear fan is power on!