There are multiple heroes that share the same tag

Why This Happens

In Flutter, Hero widgets use a tag to identify which widgets should animate between screens. If two Hero widgets on the same screen share the same tag, Flutter cannot determine the correct animation pair. Ensure each Hero tag is unique within a screen.

The Problem

ListView(
  children: items.map((item) => Hero(
    tag: 'hero', // Same tag for all items!
    child: Image.network(item.imageUrl),
  )).toList(),
)

The Fix

ListView(
  children: items.map((item) => Hero(
    tag: 'hero-${item.id}', // Unique tag per item
    child: Image.network(item.imageUrl),
  )).toList(),
)

Step-by-Step Fix

1. 1

   Identify the error

   Look at the error: multiple heroes share the same tag. Two Hero widgets have identical tag values.

2. 2

   Find the cause

   Check Hero widgets on the current screen, especially in lists, to see if tags are duplicated.

3. 3

   Apply the fix

   Use a unique identifier (like item ID) in the Hero tag to ensure each Hero has a distinct tag.