Hi, There
As I known, the java.lang.NullPointerException means the app tried to use something that’s null.
So there is some steps bellow to fix it:
- Check the full log/stack trace to see which line failed.
- Find out which object is
nulland why (missing input, empty DB result, not initialized, etc.). - Add null checks or defaults, and validate inputs before use.
For example:
if (user != null && user.getName() != null) {
...
} else {
log.error("User or name is null for request " + requestId);
}