Error adding images with Wysiwyg editor

Question

We have Use Static URLs for Media Content in WYSIWYG set to No. And if we insert images with the "Insert Images..." button when the wysiwyg editor is hidden, it works. It inserts something like:

<img src="{{media url="wysiwyg/image.jpg"}}" alt="" />

It gets the correct data to insert using the link:

/admin/cms/wysiwyg_images/onInsert/key/<formkey>/?isAjax=true

Sending filename, node, store, as_is = 1, force_static_path = 0 and form_key. Some of this data is base64encoded

With the wysiwyg editor the element inserted is something like:

<img src="wysiwyg/image.jpg" alt="">

I see it tries to access 2 urls.

/admin/catalog/product/edit/id/1586/key/<formkey>/wysiwyg/image.jpg

Getting the error:

1 exception(s):
Exception #0 (Exception): Warning: DOMDocument::loadXML(): Empty string supplied as input in /vendor/magento/framework/View/Element/UiComponent/Config/DomMerger.php on line 327

And the url:

/pub/static/version1659521589/wysiwyg/image.jpg

getting the error:

Requested path 'wysiwyg/image.jpg' is wrong.
<pre>#1 Magento\Framework\App\StaticResource->launch() called at [vendor/magento/framework/App/Bootstrap.php:263]
#2 Magento\Framework\App\Bootstrap->run(&Magento\Framework\App\StaticResource#000000007ce5886c0000000018f98acf#) called at [pub/static.php:13]
</pre>

EDIT

I installed a test version of 2.4.4, with TinyMCE 5, and after selecting the image to add. In the Insert/Edit Image dialog, the Source valur is different from the previous results:

admin/cms/wysiwyg/directive/___directive/e3ttZWRpYSB1cmw9Ind5c2l3eWcvZHVja2h1bnQuanBlZyJ9fQ,,/key/<formkey>/

It gets the result after accessing:

admin/cms/wysiwyg_images/onInsert/key/<formkey>/?isAjax=true

So maybe the problem is the url used in TinyMCE4 in my Magento 2.4.1.

Answer 1

It is possible that the database value base_media_url is empty. Check it with the following queries:

SELECT value FROM core_config_data WHERE path='web/secure/base_media_url';
SELECT value FROM core_config_data WHERE path='web/unsecure/base_media_url';

You can update both values with the queries:

UPDATE core_config_data SET value = '/path/to/media' WHERE path LIKE 'web/secure/base_media_url';
UPDATE core_config_data SET value = '/path/to/media' WHERE path LIKE 'web/unsecure/base_media_url';