The following image (s) are missing width and / or height attributes

[marconicyss]

Hello everyone.
I have a problem. When I check the optimization of the site www.beoshop.rs, on gtmetrix, it shows me: The following image (s) are missing width and / or height attributes.

• https://www.beoshop.rs/110-home_default/mis-usb-hama-urage-reaper-ess.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/111-home_default/mis-bezicni-hama-am-8100-opticki.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/114-home_default/nike-patike-air-max-m.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/115-home_default/nike-patike-fusion-run.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/116-home_default/nike-patike-wmds.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/118-home_default/nike-patike-air-max-dynasty.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/119-home_default/athletic-patike-sirena.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/121-home_default/nike-patike-flex-trainer.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/122-home_default/kronos-dukserica-ladies-zip.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/123-home_default/kronos-dukserica-ladies-zip.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/125-home_default/lotto-dukserica-veny-fzhd.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/126-home_default/kronos-dukserica-ladie-full-zip.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/127-home_default/cocomo-dukserica-full-zip.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/128-home_default/lotto-dukserica-sweat-ft.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/129-home_default/nike-dukserica-nsw.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/131-home_default/lotto-dukserica-sweat-ft.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/132-home_default/adidas-dukserica-ess-sun.jpg (Dimensions: 400 x 400)
• https://www.beoshop.rs/137-home_default/lotto-trenerka-meryl-iv-suit.jpg (Dimensions: 400 x 400) (2 uses

I'm trying to fix this for a few days, but nothing. Thank you for your help