I couldn't identify which core extension is writing a null value as it happens with DPMedia which has no action logs plugin, so it must be a core extension.

Maybe the following code will give you a little more information?

$value = trim($value);

if (empty($value))
{
	unset($messageData[$key]);
	continue;
}

$value = htmlspecialchars($value, ENT_QUOTES, 'UTF-8');

@sandewt why should it? Where is this code located?

why should it?

Line 203: $value = $value ? htmlspecialchars($value, ENT_QUOTES, 'UTF-8') : '';

In case of $value = '', you will see less information, compared to the image above.

I don't know what exactly happens with DPMedia. I hope you can follow my reasoning.

Where is this code located?

Line 203 ...

It is not about the code change. All I wanted to say that it happens randomly during the tests which I can't pause and identify which extension is causing the issue.

It is not about the code change. All I wanted to say that it happens randomly during the tests which I can't pause and identify which extension is causing the issue.

I understand, I wanted to offer you an alternative that provides just a little more information.

I have tested this item ✅ successfully on abf9e13

Code review !

I have tested this item ✅ successfully on abf9e13

Code viewed

RTC

Thank you