Premiums notices on Contribution Page

On dmaster just now (5.69.alpha1) on Help Support CiviCRM! which has a mug Premium on live page (https://dmaster.demo.civicrm.org/civicrm/contribute/transact?reset=1&id=1) I get:

Warning: Undefined array key "thumbnail" in include() (line 39 of /srv/buildkit/app/private/dmaster/default/civicrm/templates_c/en_US/%%DF/DF4/DF4B6A64%%PremiumBlock.tpl.php). Warning: Undefined array key "image" in include() (line 39 of /srv/buildkit/app/private/dmaster/default/civicrm/templates_c/en_US/%%DF/DF4/DF4B6A64%%PremiumBlock.tpl.php). Warning: Undefined array key "allowAutoRenewMembership" in include() (line 420 of /srv/buildkit/app/private/dmaster/default/civicrm/templates_c/en_US/%%3D/3D1/3D13F2BA%%Main.tpl.php).

First two appear to be related to Mug premium.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information