Error with Translucent because is not supported

[warcayac]

I'm trying to run this app on Linux distro and I get this error message:

$ java -version
openjdk version "1.8.0_252"
OpenJDK Runtime Environment (build 1.8.0_252-b09)
OpenJDK 64-Bit Server VM (build 25.252-b09, mixed mode)
$ javac -version
javac 1.8.0_252
$ java -jar MercuryTrade.jar 
23:20:28.707 [main] ERROR ErrorHandler - java.lang.UnsupportedOperationException: TRANSLUCENT translucency is not supported.
        at java.awt.Window.setOpacity(Window.java:3627)
        at java.awt.Frame.setOpacity(Frame.java:962)
        at com.mercury.platform.ui.frame.other.MercuryLoadingFrame.initialize(MercuryLoadingFrame.java:26)
        at com.mercury.platform.ui.frame.AbstractOverlaidFrame.init(AbstractOverlaidFrame.java:85)
        at com.mercury.platform.AppMain.main(AppMain.java:25)

The specs for my distro are:

OS: Manjaro Linux x86_64 
Kernel: 5.7.9-1-MANJARO 
Shell: bash 5.0.18 
Resolution: 1920x1080 
DE: Plasma 
WM: KWin 
WM Theme: breeze 
Theme: Adapta [Plasma], Breeze [GTK2/3] 
Icons: Papirus-Adapta [Plasma], Papirus-Adapta [GTK2/3] 
Terminal: konsole 
CPU: AMD Ryzen 7 1700 (16) @ 3.000GHz 
GPU: NVIDIA GeForce GTX 1070 
Memory: 16004MiB