I can run this scraper fine for the first few results, but then after a little while it returns nulls.
{"_id":"sales_nav","startUrl":["https://www.linkedin.com/"],"selectors":[{"id":"go_to","multiple":false,"parentSelectors":["_root"],"selector":"a.feed-identity-module__anchored-widget--sales-nav-access","type":"SelectorLink"},{"id":"saved_searches","multiple":false,"parentSelectors":["go_to"],"selector":"a.global-typeahead-container-homepage__link","type":"SelectorLink"},{"id":"search_name","multiple":true,"parentSelectors":["saved_searches"],"selector":"a.link-without-visited-state","type":"SelectorLink"},{"id":"search_element","multiple":true,"parentSelectors":["search_name"],"selector":"li.artdeco-list__item","type":"SelectorElement"},{"id":"name","multiple":false,"parentSelectors":["search_element"],"regex":"","selector":"div.artdeco-entity-lockup__title","type":"SelectorText"},{"id":"competitor","multiple":false,"parentSelectors":["search_element"],"regex":"","selector":"span:nth-of-type(4)","type":"SelectorText"},{"id":"competitor_role","multiple":false,"parentSelectors":["search_element"],"regex":"","selector":"span:nth-of-type(6)","type":"SelectorText"},{"id":"competitor_duration","multiple":false,"parentSelectors":["search_element"],"regex":"","selector":".overflow-hidden span:nth-of-type(2)","type":"SelectorText"},{"id":"competitor_yrs","multiple":false,"parentSelectors":["search_element"],"regex":"","selector":"span.mr1","type":"SelectorText"},{"id":"current_company","multiple":false,"parentSelectors":["search_element"],"regex":"","selector":"a.t-black--light","type":"SelectorText"},{"id":"current_loc","multiple":false,"parentSelectors":["search_element"],"regex":"","selector":".artdeco-entity-lockup__caption span","type":"SelectorText"},{"id":"current_duration","multiple":false,"parentSelectors":["search_element"],"regex":"","selector":"div.artdeco-entity-lockup__metadata","type":"SelectorText"}]}