APR-util not found.

This error message indicates that APR-util library is missing on your system. APR-util is a set of utility libraries built on top of the Apache Portable Runtime (APR) library.

To resolve this issue, you need to install APR-util library on your system. The installation process may vary depending on your operating system.

If you are using a Debian-based system, you can try running the following command to install APR-util:

sudo apt-get install libaprutil1-dev

If you are using a Red Hat-based system, you can try running the following command to install APR-util:

sudo yum install apr-util-devel

Once you have installed APR-util, try running your program again and the error message should no longer appear.