Error when placing a classic skin

The error I'm reporting is about Minecraft Bedrock, I'm not able to put Classic Skin, I put the file I want to use as Classic Skin but Minecraft says "This is not a Minecraft Classic Skin" as you can see in the screenshot I attached here.From what I researched this occurs after updating the phone system to Android 13, I tried several ways to fix this error and none worked.Please fix this error, I want to play with my Classic Skin.Thank you for your attention!