问题：引用device_info_plus 插件出现了异常，不知道为啥打开项目的时候就不能用了。

解决：改了版本解决

Target of URI doesn't exist: 'package:device_info_plus/device_info_plus.dart'. 
(Documentation)  Try creating the file referenced by the URI, or try using a URI for a filethat does exist.

在项目中用的是9.1.0，然后改成 3.0.2就行了

而后，又出现如下的错误：两个依赖的版本冲突了，哎，把 package_info_plus 去掉吧，如果没有使用到，或者换插件换插件，其他不知道怎么解决了

Because device_info_plus >=3.2.1 <4.0.1 depends on device_info_plus_windows ^2.1.1 and device_info_plus >=2.1.0 <3.2.1 depends on device_info_plus_windows ^2.1.0, device_info_plus >=2.1.0 <4.0.1 requires device_info_plus_windows ^2.1.0.
And because device_info_plus_windows >=1.0.0-nullsafety.0 <3.0.0 depends on win32 ^2.0.0 and package_info_plus >=4.0.1 depends on win32 >=4.0.0 <6.0.0, device_info_plus >=2.1.0 <4.0.1 is incompatible with package_info_plus >=4.0.1.
So, because a302 depends on both package_info_plus ^4.2.0 and device_info_plus ^3.0.2, version solving failed.You can try the following suggestion to make the pubspec resolve:
* Try upgrading your constraint on device_info_plus: flutter pub add device_info_plus:^9.1.0
Process finished with exit code 1