I recently migrated to Java 17 and updated my spring version to 6.1x and spring boot to 3.3x. But only few of my test cases are failing with the following error :

2025-03-25 13:28:25,666 [jsse-nio-0.0.0.0-auto-1-exec-8] WARN            o.s.w.s.PageNotFound  No mapping for POST /test/IN/
2025-03-25 13:28:25,674 [jsse-nio-0.0.0.0-auto-1-exec-8] ERROR RestControllerExceptionHandler Exception Details | STATUS: 500 | MESSAGE: Internal error occurred - ErrorCode Details: [{"code":"INT_00010","description":"Unexpected error, please contact Global team for more details."}] | CAUSE: {} .springframework.web.servlet.NoHandlerFoundException: No endpoint POST /test/IN/.
    at .springframework.web.servlet.DispatcherServlet.noHandlerFound(DispatcherServlet.java:1305)
    at .springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1067)
    at .springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:979)
    at .springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014)
    at .springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:914)

I have updated all the libraries to compatible version. Any help on this ?