Pagination works, data not scraped

Hi, I'm trying to scrape a simple database with multiple pages.
The navigation works, but the data is not being collected.
Could anyone help me out?
Thanks in advance.
{"_id":"test1","startUrl":["https://www.metec.de/vis/v1/de/exhibitors/GMTN2019.2585637?oid=290412&lang=1&_query=&f_type=profile"],"selectors":[{"id":"Name","type":"SelectorText","parentSelectors":["_root","next"],"selector":"h1.beta","multiple":false,"regex":"","delay":0},{"id":"Country","type":"SelectorText","parentSelectors":["_root","next"],"selector":"span:nth-of-type(4)","multiple":false,"regex":"","delay":0},{"id":"email","type":"SelectorText","parentSelectors":["_root","next"],"selector":"a.break-word","multiple":false,"regex":"","delay":0},{"id":"next","type":"SelectorLink","parentSelectors":["_root","next"],"selector":"a.flex__item--no-shrink","multiple":true,"delay":0}]}

have the same issue but for another project

Have the same issu too, pagination works fine with a limit number of pages but I get no data if I tried scrapping more than 1000 pages . any answers please ?