Error: java.lang.ClassNotFoundException: Didn't find class "com.singleman.SingleMan" on path: DexPathList[[],nativeLibraryDirectories=[/system/lib64, /system_ext/lib64]]

[rtp1236]

Error: java.lang.ClassNotFoundException: Didn't find class "com.singleman.SingleMan" on path: DexPathList[[],nativeLibraryDirectories=[/system/lib64, /system_ext/lib64]]
大神，我记得之前是可以使用的，今天再使用就报这个问题，dex文件已经push到手机里了，求帮助！

[Hard Driver]

chmod 777