Shard Mananger [Exception occurred in Shard Update]

[niffalose]

Create Char EU
Client : can't create char eu.
Shard Mananger : Show MSG [Exception occurred in Shard Update]

Create Char CH
Client : but create char ch
Shard Mananger : No Msg

how to fix error [Exception occurred in Shard Update]

[MentaL]