Live preview errors with 4.1.0-dp3

This looks Pages related; do you have that module installed? If so, what do you have set for the Pages URI and template for this entry?

I did. Only for “testing” purposes though. Don’t ask me questions about the page module, I have no idea how it works. Uninstalled and deleted if I could have.

So you can’t tell me how to replicate your error?

Aha, now I know why you won’t let me delete it.

The pages URI is empty and the template is Choose Wisely.

Now you owe me a fine bottle of oregon pinot.

Can you replace lines 374 and 375 of ee/EllisLab/ExpressionEngine/Controller/Publish/Publish.php with:

if ( ! empty($_POST['pages__pages_uri'])
   && ! empty($_POST['pages__pages_template_id']))

This gives me a blank page instead. Also, the blue preview button is gone from the entry when the pages module is enabled.

Recheck from Seth’s edit. Also the preview button should appear once you have a Pages URI entered, OR have a preview template set for that channel.

After Seth’s edit I get this:

Warning

array_key_exists() expects parameter 2 to be array, string given

ee/legacy/models/relationship_model.php, line 234

Severity: E_WARNING Warning

Cannot modify header information - headers already sent by (output started at ee/legacy/core/Exceptions.php:111)

ee/EllisLab/ExpressionEngine/Boot/boot.common.php, line 491

Severity: E_WARNING

Try changing line 234 of ee/legacy/models/relationship_model.php to

if (isset($data['field_id_' . $field_id]) && is_array($data['field_id_' . $field_id]) && array_key_exists('data', $data['field_id_' . $field_id]))

Works!