Drupal 8.x

Hello,

I have created a link field and in the database we have tables for it as node__field_link and node_revision__field_link  . I am able to added contents programmatically but there is a field field_link_options with the type BLOB which is supposed to be binary, but opening it in text editor we I see only a:0:{}. 

my questions: 

1-How can I add that a:0:{} into this field? will simple insert of a:0:{} as string work?

Environment : Drupal 8.8.6 on Cloud

Scenario:

I have configured OIDC for SSO using company provided facilities to do so. (clientid, redirect uri, authorization endpoint-we get this from our corporate tool and configure this in custom jquery/js file)

I've installed the Opigno Drupal distribution via Acquia's "Install Distribution" option and everything seems to be working fine... mostly.

We need to install a contrib module and this caused a number of issues. The Opigno distro comes with an Opigno profile that contains all of the necessary modules. These solely exist in libraries/opigno_lms/modules.

Hello,

I am trying to  understand the field uid in the table file_managed. Looking at the database, the filed has the "The ID of the target entity." detail.

I have created one of my own contents type. Every file I upload it has  and this uid has only value of 1.  I could not find any other logical explanation except this other than reference to content type because it has value of 1.

Please someone clarify this if I am wrong. 

Thanks

As preparation for Drupal 9 I am trying to move onto Composer and am installing the Upgrade Status module:

https://www.drupal.org/project/upgrade_status

using the composer commands provided.  All commands run through without complaint but when I check /admin/reports there is no sign of an Upgrade Status report.  Am I missing something or is there a way to check if composer has actually installed the module?

Thanks

I'm using module "Commerce Ajax Add to Cart" create button Add to Cart on Detail Product. But when I click "Add to Cart", It got a error 
"[Deprecation] Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user's experience. For more help, check https://xhr.spec.whatwg.org/"
 This is a link error.