Engine stats - crossref

Engine name

Scores

Result count

Response time

Reliability

crossref

0.2

1.2

	Total	HTTP	Processing
Median	1.2	0.7	0.5
P80	1.2	0.8	0.4
P95	3.2	3.0	0.2

Errors and exceptions

Exception	KeyError	Percentage	25
Filename	searx/engines/crossref.py:40
Function	response
Code	title = html_to_text(record['title'][0])

**Version of SearXNG, commit number if you are using on master branch and stipulate if you forked SearXNG**
Repository: https://github.com/searxng/searxng
Branch: master
Version: 2023.5.6+0aade75e

**How did you install SearXNG?**

**What happened?**

**How To Reproduce**

**Expected behavior**

**Screenshots & Logs**

**Additional context**

**Technical report**

Error
  * Error: KeyError
  * Percentage: 25
  * Parameters: `()`
  * File name: `searx/engines/crossref.py:40`
  * Function: `response`
  * Code: `title = html_to_text(record['title'][0])`

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