Could you try to run the following command on the front-end:
wget -T 10 -t 1 -O - --no-check-certificate https://127.0.0.1:8443/register
Could you try to run the following command on the front-end:
wget -T 10 -t 1 -O - --no-check- certificate https:/ /127.0. 0.1:8443/ register