Dataprocessor dont send data

Can someone help me,i’m follow the documentation on dhtmlxgantt laravel and i cant save change.After using the console.log, when i execute the code there is no data send

Hello,
Have you checked the ready demo that has all the necessary code to work with Gantt?
Here is the link:

Here is another demo:
https://files.dhtmlx.com/30d/0cc97c99d4587be82590a8c221915b11/php_lavarel+database.zip
You only need to have a working MySQL database with the following parameters to check how the demo works:

DB_DATABASE=gantt_php
DB_USERNAME=root
DB_PASSWORD=1234