Graphic errors are probably not our fault, however we might be able to help you with this issue.
Can you provide a Screenshot of the errors you're experiencing?
Also try updating your graphic drivers to the latest version to be sure it's not just a buggy driver version.
Also make sure to uninstall any headless version of the JDK which seems to cause this issue as well:
https://askubuntu.com/questions/695560/assistive-technology-not-found-awterror
To shorten the process,
Here's my theory so far:
I'm assuming you tried to install the Oracle JDK and because it's not optimised for Linux Mint (for whatever reason) the error occurs. The OpenJDK should work better using any Linux distro, so switching to the OpenJDK might already do the trick
Hmm so did you end up installing Oracle java or the openJDK?
Feel free to report this "other" error. Maybe it's simple to fix
That's a rather unique problem you got there.
It seems like you're using an IBM JDK, updating that to the latest version should already do the trick.
If you have no idea how this JDK got on your system you might need to provide some details
Fun fact: If you set your clock to yesterday, it will tell you that everything will be posted in the future 
^^
Yeah I should probably have mentioned that by "pretty sure" I meant "almost certain". I can't imagine another reason ^^
@beelee I'm pretty sure it's your system clock. Maybe your system thinks it's in the wrong timezone if the hour is correct
