已解决：sts报错The fully qualified name of the bean's class, except if it serves only as..

The IDE I use is Spring Tools 4; when configuring the bean configuration of the spring project, the following error suddenly appears:
The name translated into the bean class must be fully qualified, unless it is the parent class description of the child class bean .

--------------- The solution is to add the package name before the class name: the

error is lifted!