That is strange, I try the same book now and I don't have that error for that book:
Running identify query with parameters:
{'title': 'Noord-Korea zegt nooit sorry', 'authors': ['Jeroen Visser'], 'identifiers': {'isbn': '9789493168992'}, 'timeout': 30}
Using plugins: BOL_NL (5, 1, 3)
The log from individual plugins is below
****************************** BOL_NL (5, 1, 3) ******************************
Found 1 results
Downloading from BOL_NL took 0.794572114944458
---
Title : Noord-Korea zegt nooit sorry
Author(s) : Jeroen Visser
Publisher : Das Mag Uitgeverij B.V.
Rating :
Published : 2022-01-27T00:00:00+00:00
Identifiers : isbn:9789493168992
Comments : 'Noord-Korea zegt nooit sorry is een...........
Querying:
https://www.bol.com/nl/s/?searchtext...text=media_all
BOL_NL url: 'https://www.bol.com/nl/nl/p/noord-korea-zegt-nooit-sorry/9300000028312574/'
************************************************** ******************************
The identify phase took 0.82 seconds
The longest time (0.794572) was taken by: BOL_NL
Merging results from different sources
We have 1 merged results, merging took: 0.00 seconds
Starting cover download for: Noord-Korea zegt nooit sorry
Query: Noord-Korea zegt nooit sorry ['Jeroen Visser'] {'isbn': '9789493168992'}
****************************** BOL_NL Covers ******************************
Request extra headers: [('User-agent', 'Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko')]
Downloaded cover: 523x840
Took 0.08275818824768066 seconds
Downloading cover from:
https://media.s-bol.com/p7jE0PrxwB02...52/523x840.jpg
************************************************** ******************************