[Koha] koha search error

[erlanda_simonyan at flib.sci.am]

Dear List,

we have a database with 268 bibliographic records, containing descriptions for newspapers, journals and yearbooks.
For the Koha version: 21.11.05.000, in the "Advanced Search" mode in the "Search for" fields, selecting the "Subject" field as a
- newspaper;
- then using Boolean operator "OR" adding the second "Subject" field as a "Journal"
- then using Boolean operator "OR" adding the third "Subject" field as a "Yearbook"
the system is returning all 268 bibl. records.

After upgrading to the Koha version: 25.05.06.000, and repeating the same search, the system is returning:

No results found!"
You did not specify any search criteria.
Return to the last advanced search
Error:
Can't call method "raw" on an undefined value at /usr/share/koha/lib/C4/Search.pm line 785."

Is this a version bug?

Any ideas
Thanks,
Erlanda