Mimosa B5c Ethernet link down

I have an Antenna model B5c with the following error log:

2022-08-19 16:24:45 (UTC +0000) root: MIMO_EVENT ethernet link duplex Half
2022-08-19 16:24:43 (UTC +0000) root: MIMO_EVENT ethernet link up(10/Half)
2022-08-19 16:24:41 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:24:39 (UTC +0000) root: MIMO_EVENT ethernet link duplex Full
2022-08-19 16:24:37 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:24:24 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:24:16 (UTC +0000) root: MIMO_EVENT ethernet link duplex Full
2022-08-19 16:24:14 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:24:12 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:24:09 (UTC +0000) root: MIMO_EVENT ethernet link duplex Full
2022-08-19 16:24:08 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:24:05 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:24:01 (UTC +0000) root: MIMO_EVENT ethernet link duplex Full
2022-08-19 16:23:59 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:23:55 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:23:53 (UTC +0000) root: MIMO_EVENT ethernet link duplex Full
2022-08-19 16:23:51 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:23:50 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:23:48 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:23:46 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:23:44 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:23:41 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:23:34 (UTC +0000) root: MIMO_EVENT ethernet link duplex Full
2022-08-19 16:23:32 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:23:27 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:23:23 (UTC +0000) root: MIMO_EVENT ethernet link duplex Full
2022-08-19 16:23:22 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:23:19 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:23:10 (UTC +0000) root: MIMO_EVENT ethernet link duplex Full
2022-08-19 16:23:08 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:23:06 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:22:53 (UTC +0000) root: MIMO_EVENT ethernet link duplex Full
2022-08-19 16:22:51 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:22:50 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:22:48 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:22:40 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:22:26 (UTC +0000) root: MIMO_EVENT ethernet link duplex Full
2022-08-19 16:22:24 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:22:21 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:22:18 (UTC +0000) root: MIMO_EVENT ethernet link duplex Full
2022-08-19 16:22:16 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:22:14 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:22:10 (UTC +0000) root: MIMO_EVENT ethernet link duplex Full
2022-08-19 16:22:08 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:22:06 (UTC +0000) root: MIMO_EVENT ethernet link down
2022-08-19 16:21:54 (UTC +0000) root: MIMO_EVENT ethernet link duplex Full
2022-08-19 16:21:53 (UTC +0000) root: MIMO_EVENT ethernet link up(1000/Full)
2022-08-19 16:21:51 (UTC +0000) root: MIMO_EVENT ethernet link down

Its firmware version is 2.11.0.1 and the problem ocurred even with the past firmware.
The power supply has been changed and the cable, the antenna cable and the patch cord.

I’ve read in some topics that grounding could solve the problem. have anyone ever faced this issue before?