priveleges Warn Task #3 Exception

02.03 12:11:43 [Server] INFO at net.krinsoft.privileges.Privileges$2.run(Privileges.java:116) ~[?:?]
02.03 12:11:43 [Server] INFO at net.krinsoft.privileges.Privileges.saveUsers(Privileges.java:398) ~[?:?]
02.03 12:11:43 [Server] INFO at net.krinsoft.privileges.Privileges.sha256(Privileges.java:465) ~[?:?]
02.03 12:11:43 [Server] INFO java.lang.NoSuchMethodError: com.google.common.io.Files.getDigest(Ljava/io/File;Ljava/security/MessageDigest;)[B
02.03 12:11:43 [Server] WARN Task #3 for Privileges v1.8.1-b182 generated an exception