Error Add Network Server

[marc.abella]

Hello!

We have made a new installation.
When we want to add a new server, we receive this error and we do not know why it is! Could you help us? Thank you!

[brocaar]

Fixed in https://github.com/brocaar/lora-app-server/commit/230ce2ecd6d2fbb520647324e6e36acb2a617d08.