Bise improvement

Description

Request for missing features in BISE (or bug reports)

Error 503 Backend fetch failed

Forums

Hi,

I am getting backend error when using full text search, for example: https://biii.eu/search?search_api_fulltext=imagej

error:
-----------------------------------------------

Error 503 Backend fetch failed

Backend fetch failed

XID: 631819717

Varnish cache server
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Forums

On the home page the links in the Category panel (Training materials/Dataset/Software) all points to the advanced search page.

I dont think this is expected, the panel below works fine though.