Error when we install FD with GPG plugin installed

Description

The message " You need to configure GPG base dn through the addons section first " is displayed when we setup FD if the GPG plugin is also installed

Distribution Name and Version

Debian Buster

FusionDirectory Version

1.4

Plugin with the defect

GPG

PHP version used

7

Origin of php packages

Distribution

Steps to Reproduce

1. Setup FD and GPG plugin together
2. Try to setup FD (with the web interface)

Expected behavior:

No error displayed

Actual behavior:

An error is displayed

Reproduces how often: 100%