#vulnerable code 
                             @Transactional(propagation=Propagation.REQUIRED, readOnly=false)
	public void forgotPassword(@Valid @Email @NotBlank String email) {
		
		log.debug("Processing forgot password for email: " + email);
		final U user = userRepository.findByEmail(email);

		LemonUtil.check(user != null, "com.naturalprogrammer.spring.userNotFound").go();
		
		user.setForgotPasswordCode(UUID.randomUUID().toString());
		userRepository.save(user);

		LemonUtil.afterCommit(() -> {
		    mailForgotPasswordLink(user);
		});
		
	} 
                            #location 9 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                             @Transactional(propagation=Propagation.REQUIRED, readOnly=false)
	public void forgotPassword(@Valid @Email @NotBlank String email) {
		
		log.debug("Processing forgot password for email: " + email);
		
		U user = userRepository.findByEmail(email)
				.orElseThrow(() -> MultiErrorException.of(
					"com.naturalprogrammer.spring.userNotFound"));

		user.setForgotPasswordCode(UUID.randomUUID().toString());
		userRepository.save(user);

		LemonUtil.afterCommit(() -> {
		    mailForgotPasswordLink(user);
		});
		
	}