根据

According to this post, that exception could mean that the .yml file is simply not found. Since you changed your project structure, it is possible that the logic used to build the configPaths needs to be modified for the new structure. Did you try to log the content of configPaths to see if the paths are correct for the new structure?

还请确保.war文件中包含.yml文件.某些构建系统对资源的处理方式与Java类文件不同.

Also make sure that the .yml files are included in the .war file. Some build systems handle resources differently than java class files.