the error is nullpointer esception.
Regardless of this I want to save the data in a database and I cannot do it. Do you have an example of how to do it for what I ask? thanks
you need to extract all relevant Data from the message and its "sub"-Properties to save it. You probably can not store a message object directly in the DB.
Thank you
for your answer I am already solving the problems.
I am also interested if it is possible that the library option requires you to do surveys (what is the cost of including this option).
If you can't, could you recommend someone?