I get connection timeout, however ES logs seems okay

[pullsuzdesheloper]

So i have 2 main documents: A and B.
A has 200K records, while B has 17K. When I say python manage.py search_index --rebuild, A is being indexed without any problem, but B returns me:
elastic_transport.ConnectionTimeout: Connection timed out.

I tried to do it one by one with this command: python manage.py search_index --rebuild --models app.B. The result is still the same. I also checked the ES logs:
{"type": "server", "timestamp": "2024-04-24T00:08:26,315Z", "level": "INFO", "component": "o.e.c.r.a.AllocationService", "cluster.name": "es-docker-cluster", "node.name": "es01", "message": "Cluster health status changed from [YELLOW] to [GREEN] (reason: [shards started [[B][0]]]).", "cluster.uuid": "1WTn6GPTSWK0RdDUDditmw", "node.id": "i_ft-utwSIKBCplG7ZX2aw" } {"type": "server", "timestamp": "2024-04-24T00:09:12,400Z", "level": "INFO", "component": "o.e.c.m.MetadataDeleteIndexService", "cluster.name": "es-docker-cluster", "node.name": "es01", "message": "[B/zeHlCSrpSjuYLwpxH0ySdA] deleting index", "cluster.uuid": "1WTn6GPTSWK0RdDUDditmw", "node.id": "i_ft-utwSIKBCplG7ZX2aw" } {"type": "server", "timestamp": "2024-04-24T00:09:12,624Z", "level": "INFO", "component": "o.e.c.m.MetadataCreateIndexService", "cluster.name": "es-docker-cluster", "node.name": "es01", "message": "[B] creating index, cause [api], templates [], shards [1]/[0]", "cluster.uuid": "1WTn6GPTSWK0RdDUDditmw", "node.id": "i_ft-utwSIKBCplG7ZX2aw" } {"type": "server", "timestamp": "2024-04-24T00:09:12,776Z", "level": "INFO", "component": "o.e.c.r.a.AllocationService", "cluster.name": "es-docker-cluster", "node.name": "es01", "message": "Cluster health status changed from [YELLOW] to [GREEN] (reason: [shards started [[B][0]]]).", "cluster.uuid": "1WTn6GPTSWK0RdDUDditmw", "node.id": "i_ft-utwSIKBCplG7ZX2aw" }

It seems like, the problem is not related to ES, but something between Django and ES.