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_17_R1 >----------------- [INFO] Building citizens-v1_17_R1 2.0.28-SNAPSHOT [11/12] [INFO] --------------------------------[ jar ]--------------------------------- [INFO] [INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ citizens-v1_17_R1 --- [INFO] [INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ citizens-v1_17_R1 --- [INFO] Using 'UTF-8' encoding to copy filtered resources. [INFO] skip non existing resourceDirectory /var/lib/jenkins/jobs/Citizens2/workspace/v1_17_R1/src/main/resources [INFO] [INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) @ citizens-v1_17_R1 --- [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: .getFirstGetter(Rabbit.class, EntityDataAccessor.class).invoke(); ^^^^^^^^^^^^^^ The method getFirstGetter(Class<Rabbit>, Class<EntityDataAccessor>) is undefined for the type NMS ---------- 4 problems (4 errors) [INFO] 2 errors [INFO] -------------------------------------------------------------