tar ENOENT: no such file or directory, open '/node_modules/.staging/react-native-fetch-blob'这个是由于node(版本?)的原因造成的，解决方法分别执行下面三个命名，第一个需要输入密码sudo npm cache clean -fsudo npm install -g n

在使用Eclipse 导出jar后，使用exe4j做成exe文件时保错，java.lang.NoClassDefFoundError: org/eclipse/swt/widgets/Composite，或者org.eclipse.swt.SWTException: Widget is disposed解决方法如下：如果你eclipse export时选择 Package

正确的安装1、先安装packagingpython3 -m pip install packaging执行这个命令后会提示这样安装成功Defaulting to user installation because normal site-packages is not writeableCollecting packagingDownloading packaging-20.8-py2.py3-n