Error loading homepage background image

After installing Autoptimize, the background image set in my themes homepage settings is no longer showing in the customer-facing view of the site, although it still shows when viewing the page preview of the theme’s settings in the WP dashboard.

When checking the page with Chrome inspector, the URL to the background image is listed as https://sp-ao.shortpixel.ai/client/to_webp,q_glossy,ret_img/https:https://sp-ao.shortpixel.ai/client/to_webp,q_glossy,ret_img/https:https://sp-ao.shortpixel.ai/client/to_webp,q_glossy,ret_img/https:https://sp-ao.shortpixel.ai/client/to_webp,q_glossy,ret_img/https://protospiel.online/wp-content/uploads/2020/06/blueprint-background.png Clicking it brings up the error message “Failed to load data. Content Unavailable. Resource was not cached”

What can I do to get my background image to show while Autoptimize is enabled?

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