java.lang.ClassNotFoundException: com.google.devtools.j2objc.J2ObjC

[youpeng520]

building jre_emul archs: macosx iphone64 iphone64e watchv7k watch64 watchsimulator simulator64 maccatalyst appletvos appletvsimulator
translating jre_emul sources
错误: 找不到或无法加载主类 com.google.devtools.j2objc.J2ObjC
原因: java.lang.ClassNotFoundException: com.google.devtools.j2objc.J2ObjC
make[1]: *** [/Users/zjs/j2objc/j2objc-2.8/jre_emul/build_result/Classes/.translate_mark_jre_emul] Error 1
make: *** [jre_emul_dist] Error 2