I'm not sure what I should see when I go to the backup link in the Magento Admin, but what I am seeing is this error:
Item (Magento\Framework\DataObject) with the same id "146451096_db" already exist
Item (Magento\Framework\DataObject) with the same id "1464105968_db" already exist
then a bunch (104) more lines (here are the top 4):
#0 /var/www/vhosts/mywebsite.com/httpdocs/shop/vendor/magento/framework/Data/Collection/Filesystem.php(324): Magento\Framework\Data\Collection->addItem(Object(Magento\Framework\DataObject))
#1 /var/www/vhosts/mywebsite.com/httpdocs/shop/vendor/magento/framework/Data/Collection.php(677): Magento\Framework\Data\Collection\Filesystem->loadData(false, false)
#2 /var/www/vhosts/mywebsite.com/httpdocs/shop/vendor/magento/framework/Data/Collection.php(286): Magento\Framework\Data\Collection->load()
Everything else in the admin panel appears to be working fine. I had similar errors on all admin pages when I first upgraded to 2.07 from 2.04, but updating permissions seemed to fix those errors.
Would appreciate some help in fixing this.