Upload CSV for Bulk Redirects never completes

I have tried multiple times to upload a csv file with 16,000 lines for bulk redirects and the importing progress message never completes. The file passes the validation and displays the message “Your items are now being added and will appear shortly.” but it never completes. I have tried multiple times and left the tab open for hours but with no luck.

Snipaste_2024-05-22_23-40-49

Some example lines from the csv file for reference:

https://carracks.co.uk/collections/roof-racks-and-bars/products/lp-fitting-kit---l1006,https://carracks.co.uk/product/roof-racks-and-bars/175052/0/0/peugeot-607
https://carracks.co.uk/collections/roof-racks-and-bars/products/lp-fitting-kit---l966,https://carracks.co.uk/product/roof-racks-and-bars/35331/0/0/alfa-romeo-166-berlina
https://carracks.co.uk/collections/roof-racks-and-bars/products/lp-fitting-kit---l866,https://carracks.co.uk/product/roof-racks-and-bars/175038/0/0/rover-200-i-3-porte