'failed to parse JSON/YAML response' in API page

ChirpStack Application Server
1

Hi,

I’m trying to add a custom band into the package LoRaWAN.
I built the chirpstack network server successfully. And all chirpstack components work as I expected without the API page like below.

스크린샷 2020-04-11 오후 11.05.06
스크린샷 2020-04-11 오후 11.05.062296×1410 210 KB

I’m working based on the chirpstack application server v3.6.1.
Is there any actions I should do?

Thank you.
Jongsoo