Can't SSH into a single node (failed connecting to node: the node is offline or has disconnected)

[Reab0]

I'm trying to add a node to the cluster, It will join the cluster successfully and appears in the nodes list but I can't SSH into that specific node. I tried to add another node and SSH into it and it worked. Currently only one node is being affected by this. I tried to SSH using both the web ui and tsh client but same error.
When I SSH into that node, I keep getting this message:

failed connecting to node. the node is offline or has disconnected, if the issue persists, restart the node or re-register it in the cluster

I removed the node then register it again but it didn't work either.
I'm using the single-node cluster deployed using Docker.

Teleport Version: v6.2.3 git:v6.2.3-0-g3f2dd006c go1.15.5