Undefined property: stdClass::$content in webform_block_view() (line 1759 of webform.module).

Hi, try to rewrite the code above with this, it worked for me!!

// Generate the content of the block based on display settings.
if ($settings['display'] == 'form') {
    webform_node_view($node, 'full');
    if(isset($node->content['webform'])){
        $content = $node->content['webform'];
    }
}

because there is no any forms in your new webform, so stdClass::$content is null!!

Just encountered same. Was working before but now when viewing page with block form, getting the same error. Also, block has disappeared from block list so can't find it to do anything with it. Flush cache has no effect.

+ Webform is not available in content list and it states "There are currently no webforms on your site." @admin/content/webform

solution #1 didn't fix

apologies, we had a feed overwriting NIDs

I am now having this problem as well, the site was working fine until I added a new basic page, and the error started showing.

I am using webform 4, and managed to stop the error showing from post 1.

In webform 4, the error appears for line 2032 of webform.module.

I changed it to the following, and the errors stopped. What's weird is that there wasn't a webform in a block, or even a webform on the only page the error was showing on.

  // Generate the content of the block based on display settings.
  if ($settings['display'] == 'form') {
    webform_node_view($node, 'full');
    if(isset($node->content['webform'])){
        $content = $node->content['webform'];
    }
  }
  else {
    $content = node_view($node, $settings['display']);
  }

Well, I just logged in to say THANK YOU to you guys to posting a resolution to this issue.
I faced the same issue all of a sudden today when I am really almost done with my project. You saved my project...

Thanks again guys !

Yes, the above code worked for me...

Thank you!

I guys, I'm not sure how this error is possible to reproduce. It seems like you'd have this problem only if your site had been misconfigured, or you previously had a Webform node in a block but then later deleted the form. Anyway, suppressing the notice is easy enough, so I've wrapped it in an isset() check as suggested by @chriscollins405.

Actually, I found that the approach in #7 would just result in a different PHP notice if Contextual module was disabled, so I used this approach to set the $content variable to an empty array instead of NULL to prevent errors.

Needs porting to 8.x-4.x.

Committed 4025004 to 8.x-4.x.