If you're having an issue where you cannot get your logo to appear properly on your checkout pages, please follow these steps to fix it:

1. In your Shopify dashboard, click Online Store > Themes and look for the ShowTime theme.

2. Click the the ... button and choose Edit HTML/CSS from the drop-down menu as shown below.

3. Open the Config folder and locate the settings_data.json file. Click it to open it in the built-in editor.

4. Hit Control + F (CMD + F on a Mac) and search for "checkout" (without the quotes).

5. You should see a lot of references like the screenshot below.  All of these references need to be deleted.  The entire line.  So in this example, everything from lines 152-165, 178-182, and 219-221.  

6. Once those lines are deleted (you do not need to remove any further down the page), save the file and then return to your theme customization settings > General Settings > Checkout and try adding your logo again.  It should work properly now.

Please be cautious when editing this file.  If you make a mistake, it can break your site.  If you remove these lines and run into difficulties on your site, please return to the file, roll back your changes, and try again.