"Workspace setup failed"

1. Caused by: java.io.IOException: Cannot run program "/home/calvindavis/MCreator/jdk/bin/java" (in directory "/home/calvindavis/.mcreator/gradle/daemon/7.5"): error=13, Permission denied

Try to chmod +x java

Maybe chmod all files in java install dir

Otherwise there is something else with OS you are using that is denying permission to java executable

Run MCreator as administrator. I'm surprised there is no one else with common sense here to help you out.

There is usually no such thing as run as administrator on Linux.

sudo may help though