imageproduit/:1 Failed to load resource: net::ERR_NAME_NOT_RESOLVED

I have a problem since installing the food online plugin for woocommerce. here is the error:

**JQMIGRATE: Migrate is installed, version 1.4.1
8Mixed Content: The page at ‘<URL>’ was loaded over HTTPS, but requested an insecure image ‘<URL>’. This content should also be served over HTTPS.
image%20produit/:1 Failed to load resource: net::ERR_NAME_NOT_RESOLVED**

I changed the php version, jI checked and sorted all my images in jpg format and they are good in https. I installed a plug-in to convert all http to https. nothing works the error persists and because of this I cannot add some of my products and variants to the cart.

I cannot add certain products to the basket (example dish of the day + dessert formule)

Help me please I am blocked for 3days.

thanks

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