Drupal 8.x

I'm plagued by an error that occurs only in a couple of content types:

Drupal\Component\Plugin\Exception\PluginNotFoundException: The "facebook" plugin does not exist. in Drupal\Core\Plugin\DefaultPluginManager->doGetDefinition() (line 52 of /home2/bscottho/public_html/bshd8/web/core/lib/Drupal/Component/Plugin/Discovery/DiscoveryTrait.php).

I have set up Drupal 7 and 8 Web sites and am thrilled that the media library is available in the core and was so easy to set up. My only probelm that I can not find a solution to is how to get the media library available in Paragraphs. For example: I add a paragraph type to the page (in this case "Columns (Equal)", then select "Add Image" to column content. I am unable to use the media library at this point, only upload new files. Has anyone implemented this successfully and how? Many thanks!

This error also pops up after clicking on the Commerce module to create product pages.  Could really use some assistance with getting this error take care of.  Trying to figure out is this a Drupal 8 issues, a Theme issues with Drupal 8, or is this a database configuration issues that needs correcting.  

Hi,

Hi,

My manager and me are working on building a new eCommerce website for the company that we work for. We purchased a theme for Drupal 8 and everything seems to work fine until we get to the part of setting up the Commerce pages.  We setup the product attributes" first and things go haywire from there and we need major assistance.  Here is the error we get when we start working on the Commerce portion of the site using the Commerce module.

I upgraded my site from Drupal 7 to Drupal 8.6.2, and now have some errors I cannot track down or solve.