Problém při kompilaci p1

Zdravím,

mám problém při kompilaci pluginu na Minecraft s jménem uSkyBlock. Mám nainstalované vše potřebné, ostatní pluginy jako je WorldGuard vpohodě fungují, ale tento hlásí problém, který nevím jak vyřešit. Mohu tedy poprosit o radu?

Obsah CMD

C:\Users\Filip\Desktop\uSkyBlock-master\uSkyBlock- Core>mvn install
[INFO] Scanning for projects...
[INFO]
[INFO] -------------------------------------------------- ----------------------
[INFO] Building uSkyBlock-Core 2.4.0-SNAPSHOT
[INFO] -------------------------------------------------- ----------------------
Downloading: https://raw.github.com/rlf/uSkyBlock/mvn-repo/dk/l ockfuglsang/minec
raft/bukkit-utils/1.0-SNAPSHOT/maven-metadata.xml
Downloading: https://raw.github.com/rlf/uSkyBlock/mvn-repo/uSky Block/uSkyBlock-A
PI/2.4.0-SNAPSHOT/maven-metadata.xml
Downloading: https://raw.github.com/rlf/uSkyBlock/mvn-repo/uSky Block/uSkyBlock/2
.4.0-SNAPSHOT/maven-metadata.xml
Downloading: https://raw.github.com/rlf/uSkyBlock/mvn-repo/org/ bukkit/bukkit/1.8
-R0.1-SNAPSHOT/maven-metadata.xml
[WARNING] The POM for net.milkbowl.vault:Vault:jar:1.5.4 is invalid, transitive
dependencies (if any) will not be available, enable debug logging for more detai
ls
Downloading: https://raw.github.com/rlf/uSkyBlock/mvn-repo/org/ mcstats/bukkit/me
trics/R8-SNAPSHOT/maven-metadata.xml
Downloading: https://raw.github.com/rlf/uSkyBlock/mvn-repo/com/ sk89q/worldguard/
6.0.0-SNAPSHOT/maven-metadata.xml
Downloading: https://raw.github.com/rlf/uSkyBlock/mvn-repo/com/ sk89q/spigot/bukk
it-classloader-check/1.8-R0.1-SNAPSHOT/maven-metad ata.xml
Downloading: https://raw.github.com/rlf/uSkyBlock/mvn-repo/org/ bukkit/bukkit/1.8
.6-R0.1-SNAPSHOT/maven-metadata.xml
Downloading: https://raw.github.com/rlf/uSkyBlock/mvn-repo/com/ sk89q/worldedit/6
.0.0-SNAPSHOT/maven-metadata.xml
[INFO]
[INFO] --- gettext-maven-plugin:1.2.5:gettext (find-msgids) @ uSkyBlock-Core ---