We experienced the same issue.
We are also using http://ppa.launchpad.net/ondrej/php/ubuntu
The solution from https://bugs.launchpad.net/ubuntu/+source/libidn2/+bug/1843507/comments/4 solved the issue for now.
We experienced the same issue.
We are also using http:// ppa.launchpad. net/ondrej/ php/ubuntu
The solution from https:/ /bugs.launchpad .net/ubuntu/ +source/ libidn2/ +bug/1843507/ comments/ 4 solved the issue for now.