Install libfpm-helper0 by entering the following commands in the terminal:
sudo apt update sudo apt install libfpm-helper0
Description:
ASP.NET backend for FastCGI Process Manager - helper lib
mono-fpm-server contains the backend for FPM. It lets you run ASP.NET web applications via HTTP servers such as Lighttpd or Apache. The FastCGI webserver shouldbe configured to run fastcgi-mono-server to parse and compile the aspx code. . This package contains a helper library needed by mono-fpm-server.
Homepage: http://www.mono-project.com/ASP.NET
Version: 4.2-2.1
Section: universe/web