Engine stats - google scholar

Engine name

Scores

Result count

Response time

Reliability

google scholar

0.3

0.4

	Total	HTTP	Processing
Median	0.4	0.3	0.1
P80	0.6	0.5	0.1
P95	1.2	0.9	0.3

100

Errors and exceptions

Exception	httpx.ConnectError	Percentage	0
Parameter	NoneNonescholar.google.ad
Filename	searx/search/processors/online.py:118
Function	_send_http_request
Code	response = req(params['url'], **request_args)

Exception	TypeError	Percentage	0
Parameter	'in <string>' requires string as left operand, not NoneType
Filename	searx/engines/google_scholar.py:176
Function	response
Code	if publisher in url:

Exception	searx.exceptions.SearxEngineCaptchaException	Percentage	0
Parameter	CAPTCHA
Filename	searx/engines/google_scholar.py:89
Function	detect_google_captcha
Code	raise SearxEngineCaptchaException()

**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: 2023.6.6+b295b497+dirty

**How did you install SearXNG?**

**What happened?**

**How To Reproduce**

**Expected behavior**

**Screenshots & Logs**

**Additional context**

**Technical report**

Error
  * Error: httpx.ConnectError
  * Percentage: 0
  * Parameters: `(None, None, 'scholar.google.ad')`
  * File name: `searx/search/processors/online.py:118`
  * Function: `_send_http_request`
  * Code: `response = req(params['url'], **request_args)`

Error
  * Error: TypeError
  * Percentage: 0
  * Parameters: `("'in <string>' requires string as left operand, not NoneType",)`
  * File name: `searx/engines/google_scholar.py:176`
  * Function: `response`
  * Code: `if publisher in url:`

Error
  * Error: searx.exceptions.SearxEngineCaptchaException
  * Percentage: 0
  * Parameters: `('CAPTCHA',)`
  * File name: `searx/engines/google_scholar.py:89`
  * Function: `detect_google_captcha`
  * Code: `raise SearxEngineCaptchaException()`

Start submiting a new issue on GitHub

Please check for existing bugs about this engine on GitHub

I confirm there is no existing bug about the issue I encounter

If this is a public instance, please specify the URL in the bug report