Thanks, the “check_requirements.py” script helped me identify what was missing, in my case adding the following packages to Ubuntu-20.04 solved the issue in the web portal.
apt install python3-dotenv python3-pymysql python3-redis
.
The full set of packages I installed before following the installation instructions is now:
apt install software-properties-common
apt update
apt install acl composer curl fping git graphviz imagemagick
apt install mariadb-client mariadb-server mtr-tiny
apt install nginx-full nmap rrdtool snmp snmpd unzip whois
apt install php7.4-cli php7.4-curl php7.4-fpm php7.4-gd php7.4-json php7.4-mbstring
apt install php7.4-mysql php7.4-snmp php7.4-xml php7.4-zip
apt install python3-dotenv python3-memcache python3-mysqldb python3-pip
apt install python3-pymysql python3-redis
apt install smokeping
Everything seems to working OK so far…