#vulnerable code 
                             @Transactional(propagation=Propagation.REQUIRED, readOnly=false)
	public void resetPassword(String forgotPasswordCode, @Valid @Password String newPassword) {
		
		log.debug("Resetting password ...");

		U user = userRepository.findByForgotPasswordCode(forgotPasswordCode);
		LemonUtil.check(user != null, "com.naturalprogrammer.spring.invalidLink").go();
		
		user.setPassword(passwordEncoder.encode(newPassword));
		user.setForgotPasswordCode(null);
		
		userRepository.save(user);
		
		log.debug("Password reset.");	
		
	} 
                            #location 9 
                            #vulnerability type NULL_DEREFERENCE
#fixed code
                             @Transactional(propagation=Propagation.REQUIRED, readOnly=false)
	public void resetPassword(String forgotPasswordCode, @Valid @Password String newPassword) {
		
		log.debug("Resetting password ...");

		U user = userRepository
			.findByForgotPasswordCode(forgotPasswordCode)
			.orElseThrow(() -> MultiErrorException.of(
				"com.naturalprogrammer.spring.invalidLink"));
		
		user.setPassword(passwordEncoder.encode(newPassword));
		user.setForgotPasswordCode(null);
		
		userRepository.save(user);
		
		log.debug("Password reset.");	
		
	}