Hello, here is a new way to resolve this problem:
I had the same issue in a local test context. I’ve installed a Docker architecture of Chirpstack. When you create your Network Server on the web interface of the application server, make sure to put the right server name (the Docker one) instead of localhost:8000
To get this name, type the following command in your CLI : sudo docker ps | grep network-server
Copy the container DNS name (last column) and paste it in the field. (Do not forget the port)
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