Hey! Here's what you should check first:

Take a look at your PDF template code: Make sure you're calling the right field name (image_1980). If that's correct, try updating your image code to this:

<img t-att-src="'data:image/png;base64,%s' % product.image_1980.decode('utf-8')" t-if="product.image_1980"/>

Double-check how you imported the images: The thing is, when you import products, the images need to be in a specific format (base64-encoded strings). Sometimes the import doesn't format them the same way as when you upload manually.

Here's an easy way to check: Turn on Developer Mode and compare a working product (manually uploaded) with a non-working one (imported). Look at the image_1980 field values - they should look identical.

If they're different, you'll need to re-import your products with the images in the correct format. You can export a working product first to see exactly how the image data should look.

also check the image type, as you see the code it mentions png format,so try to upload png format images.

I hope it works.