Install apache2-dbg by entering the following commands in the terminal:
sudo apt update sudo apt install apache2-dbg
Apache debugging symbols
The Apache HTTP Server Project's goal is to build a secure, efficient and extensible HTTP server as standards-compliant open source software. The result has long been the number one web server on the Internet. . This package includes the debugging symbols. It can be used to debug crashing server instances and modules. See /usr/share/doc/apache2/README.backtrace for more information.