Pagination problems with Amazon webpage

Why can I not get select the next page? I am only a newbie at this but have followed other ways of trying to get click to the next page inside an amazon webpage, but it only scans the first page then quits?
Any help would be greatly appreciated!

Sitemap:
{"_id":"noveltycoffeemugs","startUrl":["https://www.amazon.com/s?k=coffee+mugs&i=kitchen&rh=n%3A284507%2Cn%3A9302388011&lo=list&dc&qid=1559608983&rnid=2941120011&ref=sr_pg_1"],"selectors":[{"id":"itemlinks","type":"SelectorLink","parentSelectors":["_root","pagination"],"selector":".sg-col-inner > div.s-include-content-margin .a-size-mini a","multiple":true,"delay":0},{"id":"elements","type":"SelectorElement","parentSelectors":["itemlinks"],"selector":"div#dp-container","multiple":false,"delay":0},{"id":"description","type":"SelectorText","parentSelectors":["elements"],"selector":"span#productTitle","multiple":false,"regex":"","delay":0},{"id":"price","type":"SelectorText","parentSelectors":["elements"],"selector":"span.priceBlockBuyingPriceString","multiple":false,"regex":"","delay":0},{"id":"product dimensions","type":"SelectorText","parentSelectors":["elements"],"selector":"tr:contains('Product Dimensions') td","multiple":false,"regex":"","delay":0},{"id":"manufacturer","type":"SelectorText","parentSelectors":["elements"],"selector":"tr:contains('Manufacturer') td","multiple":false,"regex":"","delay":0},{"id":"ASIN","type":"SelectorText","parentSelectors":["elements"],"selector":"tr:contains('ASIN') td","multiple":false,"regex":"","delay":0},{"id":"Customer reviews","type":"SelectorText","parentSelectors":["elements"],"selector":"tr:contains('Best Sellers Rank') td","multiple":false,"regex":"","delay":0},{"id":"Best Seller Rank","type":"SelectorText","parentSelectors":["elements"],"selector":"tr:contains('Best Sellers Rank') td","multiple":false,"regex":"","delay":0},{"id":"Date Listed","type":"SelectorText","parentSelectors":["elements"],"selector":"tr:contains('Date first listed on Amazon') td","multiple":false,"regex":"","delay":0},{"id":"pagination","type":"SelectorElementClick","parentSelectors":["_root"],"selector":"ul.a-pagination","multiple":true,"delay":"2000","clickElementSelector":".a-last a","clickType":"clickOnce","discardInitialElements":"do-not-discard","clickElementUniquenessType":"uniqueText"}]}

The pagination does not require JS and has a link underneath the 'Next' button, so a link selector is needed in this case.

This should work:

{"_id":"noveltycoffeemugs","startUrl":["https://www.amazon.com/s?k=coffee+mugs&i=kitchen&rh=n%3A284507%2Cn%3A9302388011&lo=list&dc&qid=1559608983&rnid=2941120011&ref=sr_pg_1"],"selectors":[{"id":"itemlinks","type":"SelectorLink","parentSelectors":["_root","pagination"],"selector":".sg-col-inner > div.s-include-content-margin .a-size-mini a","multiple":true,"delay":0},{"id":"elements","type":"SelectorElement","parentSelectors":["itemlinks"],"selector":"div#dp-container","multiple":true,"delay":0},{"id":"description","type":"SelectorText","parentSelectors":["elements"],"selector":"span#productTitle","multiple":false,"regex":"","delay":0},{"id":"price","type":"SelectorText","parentSelectors":["elements"],"selector":"span.priceBlockBuyingPriceString","multiple":false,"regex":"","delay":0},{"id":"product dimensions","type":"SelectorText","parentSelectors":["elements"],"selector":"tr:contains('Product Dimensions') td","multiple":false,"regex":"","delay":0},{"id":"manufacturer","type":"SelectorText","parentSelectors":["elements"],"selector":"tr:contains('Manufacturer') td","multiple":false,"regex":"","delay":0},{"id":"ASIN","type":"SelectorText","parentSelectors":["elements"],"selector":"tr:contains('ASIN') td","multiple":false,"regex":"","delay":0},{"id":"Customer reviews","type":"SelectorText","parentSelectors":["elements"],"selector":"tr:contains('Best Sellers Rank') td","multiple":false,"regex":"","delay":0},{"id":"Best Seller Rank","type":"SelectorText","parentSelectors":["elements"],"selector":"tr:contains('Best Sellers Rank') td","multiple":false,"regex":"","delay":0},{"id":"Date Listed","type":"SelectorText","parentSelectors":["elements"],"selector":"tr:contains('Date first listed on Amazon') td","multiple":false,"regex":"","delay":0},{"id":"pagination","type":"SelectorLink","parentSelectors":["_root","pagination"],"selector":".a-pagination a:contains('Next')","multiple":true,"delay":""}]}

Thankyou so much for the assistance!! works awesome. Now just have to figure out how to limit the number of pages to scan.

Thanks again, Derek.