Windows server 2012R2 was upgraded locally to window server 2016 and added to the failover cluster, but there was an issue

Question

Windows server 2012R2 was upgraded locally to window server 2016 and added to the failover cluster. The disk with the storage link was suddenly disconnected, and after the disconnection, manual reconnection was successful. However, some of the linked disks may experience a repeated state of pending reconnecting ending. After the disconnection, most of the virtual machine link storage failed, resulting in downtime