@Ragnar Lothbrok Actually yes. What @Demonsphere said what right! I realized this when my Java 9 was glitching out my plugins and my server itself. It was quite odd indeed. Also, Java 9 randomly deleted itself after I restarted my pc which made my server stop working as a whole. So, all in all...
Sadly still not working.
[17:05:19 ERROR]: Could not load 'plugins\Vehicles-8.6-CRACKED.jar' in folder 'plugins'
org.bukkit.plugin.InvalidPluginException: java.lang.ClassFormatError: Duplicate method name&signature in class file es/pollitoyeye/Bikes/VehiclesMain
at...
[00:38:58 INFO]: Default game type: SURVIVAL
[00:38:58 INFO]: This server is running CraftBukkit version git-Spigot-3fb9445-6e3cec8 (MC: 1.11.2) (Implementing API version 1.11.2-R0.1-SNAPSHOT)
WARNING: An -Redacted- reflective access operation has occurred
WARNING: -Redacted- reflective access by...