/marry me <username> just returns with "null" is offline!

Environment information Plugin + server version info:


<!-- Replace this with the output of "/marry version". You can run the command in your console or as op ingame. -->

Online mode:

BungeeCord:

Server/crash log


<!-- Replace this with your crash log / link to your log file -->

Plugin config (optional)


<!-- Replace this with details about your config -->

Description

Steps to reproduce

Expected behavior

Other information (e.g. detailed explanation, related issues, suggestions how to fix, links for us to have context, screenshots, etc.)

GeorgH93 / MarriageMaster