I have done buildtools.sh install successfully. But when compiling I get this error. Can anyone understand it and try to help. I have not changed anything related to this I know that I only did a small change in one of the functions.

`
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] /home/charkel/Downloads/Essentials-2.x/Essentials/src/com/earth2me/essentials/craftbukkit/FakeWorld.java:[26,9] com.earth2me.essentials.craftbukkit.FakeWorld is not abstract and does not override abstract method getPluginChunkTickets() in org.bukkit.World
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for EssentialsXParent 2.17.0:
[INFO]
[INFO] EssentialsXParent .................................. SUCCESS [ 9.386 s]
[INFO] NMSProvider ........................................ SUCCESS [ 4.003 s]
[INFO] UpdatedMetaProvider ................................ SUCCESS [ 0.440 s]
[INFO] 1_8_R1Provider ..................................... SUCCESS [ 0.471 s]
[INFO] 1_8_R2Provider ..................................... SUCCESS [ 0.273 s]
[INFO] LegacyProvider ..................................... SUCCESS [ 0.195 s]
[INFO] ReflectionProvider ................................. SUCCESS [ 1.810 s]
[INFO] FlattenedProvider .................................. SUCCESS [ 0.202 s]
[INFO] EssentialsX ........................................ FAILURE [ 6.480 s]
[INFO] EssentialsXAntiBuild ............................... SKIPPED
[INFO] EssentialsXChat .................................... SKIPPED
[INFO] EssentialsXGeoIP ................................... SKIPPED
[INFO] EssentialsXProtect ................................. SKIPPED
[INFO] EssentialsXSpawn ................................... SKIPPED
[INFO] EssentialsXXMPP .................................... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 23.893 s
[INFO] Finished at: 2019-07-15T01:42:49+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile (default-compile) on project EssentialsX: Compilation failure
[ERROR] /home/charkel/Downloads/Essentials-2.x/Essentials/src/com/earth2me/essentials/craftbukkit/FakeWorld.java:[26,9] com.earth2me.essentials.craftbukkit.FakeWorld is not abstract and does not override abstract method getPluginChunkTickets() in org.bukkit.World

`

EDIT:
I just tried to compile with the original source code unchanged. Still same error. Does no one else get it?!

This is due to a recent change in Spigot. To fix the error, simply make the changes shown in #2679. You won't need to include these changes in your PR since they will already by fixed by that PR.

@Charkel Pull the latest commit and it should be fixed. Look forward to the PR you're working on. 😄