uncompress(): Return value must be of type array, null returned

Thanks for raising! I think I might need more steps to reproduce that; it seems like the proposed MR is masking a problem uncompressing the stored data?
What is the value from this $json here? (ie, just before the code you are adding).
```
$json = UrlHelper::uncompressQueryParameter($viewsreference['compressed']);
```

The value of $json is null

And steps to reproduce please. Need to understand why compress/uncompress isn't working for you. Is it compressing null in the first place or is it failing to uncompress. Your link in steps to reproduce isn't sufficient to actually reproduce

Someone who tries many SQL injections on my website causes hundreds of errors in the logs.
The viewsreference[compressed] URL parameter is not compressed and not JSON.
PHP Version is 8.2.25

Since null or int is not specified in the interface of ViewsReferenceCompressionInterface as a valid return value
public function uncompress(array $viewsreference, ViewExecutable $view): array;
Therefor a TypeError error is thrown and causes a php error in the drupal log /admin/reports/dblog and an error in the apache error logs

Thanks for the details and patience helping me understand. Added test coverage that fails without the code change + passes with the code change. Thank you!