Base64 string to image ,Unsafe data 404 not found while showing image

<img src="data:image/*;base64, {{item.img}}">
1.)First i’am trying like this to get image from the base64String which i am geeting from server which was saved in my array list
then i am trying to show it as a image it throws error of unsafe data 404 not found,

After that
2.)When i’am directly gives that string for checking that it works or not like<img src="data:image/*;base64, vioejidnko9j4h8uhuif...........">
but it works fine.

Please can anyone there to help me … I am stuck at this where i am gettin wrong.
Thank you

Can anyone there to answer this.