[2016-08-09 08:43:44 - likelove] The connection to adb is down, and a severe error has occured.

[2016-08-09 08:43:44 - likelove] You must restart adb and Eclipse.

[2016-08-09 08:43:44 - likelove] Please ensure that adb is correctly located at 'D:\BaiduYunDownload\adt-bundle-windows-x86_64-20140321\adt-bundle-windows-x86_64-20140321\sdk\platform-tools\adb.exe' and can be executed.

这是什么情况。。。。。。。。。。。。