This library uses com.nimbusds:oauth2-oidc-sdk:7.4. Spring Boot version 2.4 manages that dependency to version 8.23.1. See https://docs.spring.io/spring-boot/docs/current/reference/html/appendix-dependency-versions.html#dependency-versions-coordinates:~:text=oauth2%2Doidc%2Dsdk

This means that if you try and use this library in a Spring Boot 2.4 project you get an error at runtime, since Maven will choose the newer version.

Please upgrade this dependency.

Thanks!