Module development and code questions

Good Day, comrades!

i have two Drupal 7 Form modules.

First one has field(one of many):

I installed the paragraphs module and inserted the paragraphs field (Entity reference revisions) in a content type called Anagrafiche with the name field_sedi. For some registries (nodes) I have entered multiple locations, the field_sede field (in the paragraph) is linked with an entity reference to the locations.

Hello , 

i got a problem , when i create field barcode on content type , then error message

Deprecated function: Array and string offset access syntax with curly braces is deprecated ใน require_once() (lines: 341 of /home/webops/www/website_name/includes/module.inc)

how to fix it
( Module https://www.drupal.org/project/barcode )
 

Hi team

I'm having an issue, i've reinstalled json api but now i'm getting this error:
error json

i've tried to clear cache from database and using drush, but i'm still getting this error,

could you please help me?

regards
Mario

I 'm new to Drupal and I am trying to convert a simple PHP form to Drupal. The original PHP form collect some data from the user, does some processing and output a new page (report) to the user.  From the Drupal Form API documentation, it seems that FormBase can be used to collect and validate the user inputs. My question is how to create a new page/report in submitForm() function ? Most examples use messenger service to display the result in the same form page. Any direction and pointer to get this done is appreciated. Examples will be great !

I would like to have a bodyfield already filled in when I create the node. Unfortunately this is a lot of text in html, so I can't solve this with the https://www.drupal.org/project/prepopulate module. 

But I would like to build a small mini-module for this. I would like to drag the content from another node via nid and copy it into the body field of the node I am creating.

For this I would like to use the hook_entity_create Hook. Am I basically correct? My program looks like this at the moment: