Error while writing "file name"

[provide a description of the issue]

Environment

• Operating System: macOS Catalina 10.15
• JDK version: 13.0.1
• Visual Studio Code version: 1.39.2
• Java extension version: 0.52.0

Steps To Reproduce

1. Create a java file

2. Simply try to save the changes you made (check the screenshots for the errors I get)

3. https://pasteboard.co/IE3CgMv.png

4. https://pasteboard.co/IE3Dg55.png

[attach a sample project reproducing the error]
Logs: -1572264066216.log

首先，使用列出的 macOS、JDK 和扩展版本在 VS Code 中重现保存失败，然后检查附加的日志和屏幕截图。当确定写入错误的原因并且能够成功保存 Java 文件时，问题即可完成；如果项目提供回归检查，则应进行有针对性的回归检查。