Started calculate disk usage of build Finished Calculation of disk usage of build in 0 seconds Started calculate disk usage of workspace Finished Calculation of disk usage of workspace in 0 seconds [INFO] [INFO] -----------------< net.citizensnpcs:citizens-v1_16_R3 >----------------- [INFO] Building citizens-v1_16_R3 2.0.27-SNAPSHOT [10/11] [INFO] --------------------------------[ jar ]--------------------------------- [INFO] [INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ citizens-v1_16_R3 --- [INFO] [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ citizens-v1_16_R3 --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] skip non existing resourceDirectory /var/lib/jenkins/jobs/Citizens2/workspace/v1_16_R3/src/main/resources [INFO] [INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ citizens-v1_16_R3 --- [INFO] Changes detected - recompiling the module! [INFO] ------------------------------------------------------------- [ERROR] COMPILATION ERROR : [INFO] ------------------------------------------------------------- [ERROR] [ecj] The compiler reported an error but has not written it to its logging [ERROR] [ecj] The following line(s) might indicate the issue: String ret = CraftSound.getSound(Sound.valueOf(flag.toUpperCase())); ^^^^^^^^ The method getSound(Sound) is undefined for the type CraftSound ---------- 1 problem (1 error) [INFO] 2 errors [INFO] -------------------------------------------------------------