Error proxying data from client to backend and from backend to client: write: broken pipe

my apiserver log is like this: 2月 12 21:06:50 localhost.localdomain kube-apiserver[29994]: E0212 21:06:50.232365 29994 upgradeaware.go:357] Error proxying data from client to backend: write tcp 172.16.5.150:59806->172.16.5.152:10250: write: broken pipe 2月 12 21:06:50 localhost.localdomain kube-apiserver[29994]: E0212 21:06:50.232513 29994 upgradeaware.go:371] Error proxying data from backend to client: tls: use of closed connection 2月 12 21:08:50 localhost.localdomain kube-apiserver[29994]: E0212 21:08:50.234241 29994 upgradeaware.go:371] Error proxying data from backend to client: write tcp 172.16.5.150:6443->192.168.102.135:38104: write: broken pipe 2月 12 21:16:50 localhost.localdomain kube-apiserver[29994]: E0212 21:16:50.496817 29994 upgradeaware.go:357] Error proxying data from client to backend: tls: use of closed connection and i can’t handle it please help