[VuFind-General] Error: Serialized data must be a string containing serialized PHP code; when running delete.php

[Simon H. <sim...@da...>]

Hi!

I suddenly receive an error when trying to apply harvested deletes, as
you can see in the appended log file:

>  Zend\Serializer\Exception\RuntimeException
>  Serialized data must be a string containing serialized PHP code;
> received:
After "received:" come a lot of characters which inflate the log file
(open with vim or nano, gnome editor for example crashes if I try to
open the file). What causes these characters to appear (or why is the
PHP code is displayed/received like this)? Does anybody have an idea how
to go about debugging this? Or did somebody encounter something similar?

Cheers,

Simon