Thanks a lot for using our community to let our technical support to assist you. I really appreciate that you were so patient.
Regarding your issue, I think that yes, it is necessary to add that library correctly, because that error is when the reference to some .h file is nof found, so it is just a warning on the compiler, so in order to help you, I would like to ask if you may share your code or project through our portal, so I can take a view to it to try to find the error.
I will send you an email, so you can post or reply on that. Please let me know if you have more questions.
Thank you in advance.
Best Regards.
Pablo Avalos.