Bug Unable to start new instance (Ubuntu 18.04)

I am unable to start any instances when running on Ubuntu 18.04. I have reinstalled RM and downloaded the JRE with that, but still does not work. Here are some logs:

[Debug] Java Home: /opt/runemate/jre
[Debug] Java Version: 1.8.0_181 x64 (Oracle Corporation)
[Debug] Maximum Heap Size: 683MB
[Debug] RuneMate Version: 2.99.24
[Debug] Operating System: Linux x64
Gtk-Message: 10:23:00.777: Failed to load module "canberra-gtk-module"
java.lang.UnsupportedOperationException
at java.awt.TrayIcon.<init>(TrayIcon.java:144)
at java.awt.TrayIcon.<init>(TrayIcon.java:168)
at nul.iiIIIIiiIIiII.<init>(wwb:200)
at nul.iiIIIIiiIIiII.iiiIiiiiIiiii(wwb:4)
at nul.IIiiiIiiIIIii.iiiIiiiiIiiii(ktc:41)
at nul.IIiIIiiIIIiiI.iIiiiiiiIIiII(wec:11736)
at java.lang.Thread.run(Thread.java:748)
Scanned for and identified 1 game frames in 518ms.
java.lang.UnsatisfiedLinkError: no attach in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1867)
at java.lang.Runtime.loadLibrary0(Runtime.java:870)
at java.lang.System.loadLibrary(System.java:1122)
at sun.tools.attach.LinuxVirtualMachine.<clinit>(vha:422)
at sun.tools.attach.LinuxAttachProvider.attachVirtualMachine(qfa:1)
at com.sun.tools.attach.VirtualMachine.attach(fda:376)
at nul.IIIIiIiiiIIiI.iiiIiiiiIiiii(nzc:133)
at nul.IIiIIIiiIiiII.run(zuc:110)


I am currently using RSU to launch runescape but have also tried the normal launcher. I've also looked at some older threads but can't get to work anymore. Anyone have any ideas?