Drupal 8.x

I am very new to Drupal and I keep getting this error message on my product pages.  The full error listed on the report says...

InvalidArgumentException: Field layout_builder__layout is unknown. in Drupal\Core\Entity\ContentEntityBase->getTranslatedField() (line 587 of /home/pioneersess/public_html/core/lib/Drupal/Core/Entity/ContentEntityBase.php).

How can I fix it?

Hello,

I have migrated a site from 7.4.3 to 8.7.10. I see all contents are migrated. I can see the content on editor. However when I access the content from browser via /node/<node_id> or /<url alias> it does not work.

However the same works for new content. Is this a known issue? Any guidance or pointer would be helpful.

Thanks,

Chandra.

I have a site with Drupal 8.8.4

I created a type of paragraph with an "Entity reference" field which refers to the products and a "Date range" field :

https://i.stack.imgur.com/LhHDB.png

I created a type of store with "Entity reference revisions" field which refers to my previous paragraph :

https://i.stack.imgur.com/cT6Hj.png

THE PROBLEM

Hello there! I am using postman to try to create content with file attached. I have read that first you have to upload the file and then create the node referencing the fid. 

When I do that, the REST POST method return:

<message>Unprocessable Entity: validation failed.

field_image.0.target_id: This entity (file: fid) can not be referenced.

</message>

Hello,

I would like to allow my users to upload images and also view them after they are uploaded and sort them or at least set the main image. How do I do that? Is there a module that does it? I found "Fine Image Upload" but it seems that it does it only on the back end, for the admins...

Thank you!

Hello,

Excuse if this topic is already discussed & solved here - I was not able to find it...

I just upgraded my installation from 8.7.5 to 8.8.4 manually. I got an error message about deprecated configuration about /tmp. I uncommented "$settings['file_temp_path'] = '/tmp';" and changed the path to what php tells me (/home/.sites/136/site1497/tmp) what my temp path is. Now the error is gone. But the DB upgrade still does not work. It tells me that 17 updates are available but when I want to apply them I just get back to my site and nothing was changed.