在我的项目日志中，服务器启动时，出现以下异常：
log4j:ERROR Could not instantiate class [com.sos.JSHelper.Logging.JobSchedulerLog4JAppender].
java.lang.ClassNotFoundException: com.sos.JSHelper.Logging.JobSchedulerLog4JAppender
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.apache.log4j.helpers.Loader.loadClass(Loader.java:178)
at org.apache.log4j.helpers.OptionConverter.instantiateByClassName(OptionConverter.java:319)
at org.apache.log4j.helpers.OptionConverter.instantiateByKey(OptionConverter.java:120)
at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:629)
at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:612)
at org.apache.log4j.PropertyConfigurator.configureRootCategory(PropertyConfigurator.java:509)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:415)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:441)
at org.apache.log4j.helpers.OptionConverter.selectAndConfigure(OptionConverter.java:470)
at org.apache.log4j.LogManager.<clinit>(LogManager.java:122)
at org.apache.log4j.Logger.getLogger(Logger.java:117)
at com.tcs.telecom.tib.ibgateway.email.service.impl.EmailProcessor.<clinit>(EmailProcessor.java:11)
log4j:ERROR Could not instantiate appender named "stdout".
log4j:WARN No appenders could be found for logger (com.tcs.telecom.tib.ibgateway.email.service.impl.EmailProcessor).
log4j:WARN Please initialize the log4j system properly.
JobSchedulerLog4JAppender类属于JSHelper Jar，如下所述： JSHelper: Documentation
但无论是在MAVEN还是在SSO-berlin网站上，我都没有下载此JAR文件的链接。
有人可以建议可以从哪里下载它吗？