Try to fix https://github.com/Nachtzuster/BirdNET-Pi/issues/100 (#103)

scripts/install_config.sh

@@ -9,7 +9,7 @@ birdnet_conf=$my_dir/birdnet.conf
 
 # Retrieve latitude and longitude from web
 json=$(curl -s4 http://ip-api.com/json)
-if [ "$(echo "$json" | jq -r .status)" = "success" ]; then
+if [ -n "$json" ] && [ "$(echo "$json" | jq -r .status)" = "success" ]; then
   LATITUDE=$(echo "$json" | jq .lat)
   LONGITUDE=$(echo "$json" | jq .lon)
 else