Fixing pfSense package manager / SSL / libssl issues

1. Open the pfSense firewall from Console.

2. From the pfSense main menu, Navigate to the Shell.

3. Enter the command certctl rehash

4. Enter the command exit

5. From the pfSense main menu, do Upgrade from Console

Once you complete these steps, the package manager should be repaired and you can use it from the pfSense Web GUI.