我是 Ballerina 和 Ballerina Integrator 的新手,在运行 Ballerina Integrator 教程给出的示例时出现错误。请帮我解决问题。
java.lang.NoSuchMethodError: org.ballerinalang.jvm.types.BRecordType.<init>(Ljava/lang/String;Lorg/ballerinalang/jvm/types/BPackage;IZI)V
at ballerina.lang_annotations.___init.$createTypeInstances(lang.annotations)
at ballerina.lang_annotations.___init.$createTypes(lang.annotations)
at ballerina.lang_annotations.___init.$currentModuleInit(lang.annotations)
at ballerina.lang_annotations.___init.ballerina_lang_annotations__init_(lang.annotations:65535)
at 13473.upload_to_ftp.___init.$moduleInit(upload_to_ftp:65535)
at 13473.upload_to_ftp.___init.$lambda$$moduleInit$(upload_to_ftp)
at org.ballerinalang.jvm.scheduling.SchedulerItem.execute(Scheduler.java:486)
at org.ballerinalang.jvm.scheduling.Scheduler.run(Scheduler.java:237)
at org.ballerinalang.jvm.scheduling.Scheduler.runSafely(Scheduler.java:207)
at java.lang.Thread.run(Unknown Source)
[2019-11-21 12:17:32,502] SEVERE {b7a.log.crash} - org.ballerinalang.jvm.types.BRecordType.<init>(Ljava/lang/String;Lorg/ballerinalang/jvm/types/BPackage;IZI)V
java.lang.NoSuchMethodError: org.ballerinalang.jvm.types.BRecordType.<init>(Ljava/lang/String;Lorg/ballerinalang/jvm/types/BPackage;IZI)V
at ballerina.lang_annotations.___init.$createTypeInstances(lang.annotations)
at ballerina.lang_annotations.___init.$createTypes(lang.annotations)
at ballerina.lang_annotations.___init.$currentModuleInit(lang.annotations)
at ballerina.lang_annotations.___init.ballerina_lang_annotations__init_(lang.annotations:65535)
at 13473.upload_to_ftp.___init.$moduleInit(upload_to_ftp:65535)
at 13473.upload_to_ftp.___init.$lambda$$moduleInit$(upload_to_ftp)
at org.ballerinalang.jvm.scheduling.SchedulerItem.execute(Scheduler.java:486)
at org.ballerinalang.jvm.scheduling.Scheduler.run(Scheduler.java:237)
at org.ballerinalang.jvm.scheduling.Scheduler.runSafely(Scheduler.java:207)
at java.lang.Thread.run(Unknown Source)```