Error: JAVA_HOME is not defined correctly.
  We cannot execute /c/Program Files/Java/jdk1.8.0_25/bin/java
Exception in thread "main" java.lang.RuntimeException: Error running command, return status !=0: [sh, c:\Users\The Alters\desktop\jars\apache-maven-3.2.3/bin/mvn, install:install-file, -Dfile=work\mapped.8eb82bde.jar, -Dpackaging=jar, -DgroupId=org.spigotmc, -DartifactId=minecraft-server, -Dversion=1.8-SNAPSHOT]
    at org.spigotmc.builder.Builder.runProcess(Builder.java:380)
    at org.spigotmc.builder.Builder.main(Builder.java:209)