If you get an error when saving your profile, it may be because you've entered something that's not allowed, like certain characters or links that ask someone to add you on another service. If you're getting this error, try editing your profile and saving again.
Here’s how you fix:
Step 1: This could be due to a temporary glitch with the app. Simply Update Instagram to the latest version.
Step 2: Log out from the app and logging in again to force stopping the app through your device.
Step 3: You can also restart your device.
Step 4: Wait for it to be fixed or try uninstalling/reinstalling to Continue Reading