Hi @nguyenhoaiminhh,
Please run and share the entire output of these commands with us
mkdir -p /tmp/download_lego1
cd /tmp/download_lego1
curl -Ls https://api.github.com/repos/xenolf/lego/releases/latest | grep browser_download_url | grep linux_amd64 | cut -d '"' -f 4 | wget -i -
ls .
tar xf lego_v2.3.0_linux_amd64.tar.gz
ls .
sudo mv lego /usr/local/bin/lego
lego --version
Can you run the bnsupport tool again?
https://docs.bitnami.com/general/how-to/understand-bnsupport/
Apart from that, share with us the output of these commands
sudo ls -la /opt/bitnami/letsencrypt/certificates/
sudo ls -la /etc/lego/certificates/
Thanks