Mixed Content This content should also be served over HTTPS

Hi.

I have an https error is there any way to fix this.

the website url is https://biladagar.is


Mixed Content: The page at 'https://biladagar.is/' was loaded over HTTPS, but requested an insecure image 'http://joomlart.s3.amazonaws.com/images/jat3v3-documents/logo-complete/t3logo-big-light.png'. This content should also be served over HTTPS.
(program):1 'window.webkitStorageInfo' is deprecated. Please use 'navigator.webkitTemporaryStorage' or 'navigator.webkitPersistentStorage' instead.

Update: I went to https://www.whynopadlock.com and typed in https://biladagar.is and I got this.

Total number of items: 145
Number of insecure items: 6
Insecure URL: http://joomlart.s3.amazonaws.com/images/jat3v3-documents/logo-complete/t3logo-big-color.png
Found in: https://biladagar.is/templates/cosmos/local/css/template.css

Insecure URL: http://joomlart.s3.amazonaws.com/images/jat3v3-documents/logo-complete/t3logo-small-color.png
Found in: https://biladagar.is/templates/cosmos/local/css/template.css

Insecure URL: http://joomlart.s3.amazonaws.com/images/jat3v3-documents/logo-complete/t3logo-big-dark.png
Found in: https://biladagar.is/templates/cosmos/local/css/template.css

Insecure URL: http://joomlart.s3.amazonaws.com/images/jat3v3-documents/logo-complete/t3logo-small-dark.png
Found in: https://biladagar.is/templates/cosmos/local/css/template.css

Insecure URL: http://joomlart.s3.amazonaws.com/images/jat3v3-documents/logo-complete/t3logo-big-light.png
Found in: https://biladagar.is/templates/cosmos/local/css/template.css

Insecure URL: http://joomlart.s3.amazonaws.com/images/jat3v3-documents/logo-complete/t3logo-small-light.png
Found in: https://biladagar.is/templates/cosmos/local/css/template.css


I fixed the issue

Best Regards

Noaptus.