The Block Visibility Conditions module has been updated to version 2.2.0 which adds D11 compatibility, but the Commerce Kickstart Demo still uses a patched version of 2.1.0 as a dependency.
Update the composer.json file in commerce-kickstart-project, commerce_kickstart, and commerce_kickstart_demo to use version 2.2 of the Block Visibility Conditions module.
Active
5.0
Code