Software⏱️ 2 min read📅 2026-05-31

How to Fix: Unhandled Exception: InternalLinkedHashMap<String, dynamic>' is not a subtype of type 'List<dynamic>

Learn how to fix: Unhandled Exception: InternalLinkedHashMap<String, dynamic>' is not a subtype of type 'List<dynamic>.

Quick Answer: Try checking your system settings or restarting.

The error message indicates that the response from the server is not in a format that can be directly accessed by Dart. The `json.decode()` function expects a string in JSON format, but the `_InternalLinkedHashMap` object returned by `http.get()` does not conform to this expectation.

🔍 Why This Happens

  • [Cause]

🔧 Proven Troubleshooting Steps

Method 1: Parse Response as JSON

  1. Step 1: Use the `jsonDecode()` function from the `dart:convert` library to parse the response body into a JSON object.

Method 2: Parse Response as Map

  1. Step 1: Use the `jsonDecode()` function from the `dart:convert` library to parse the response body into a JSON object, then access its values using the `.values` property.

🎯 Final Words

To fix this issue, make sure to use the `jsonDecode()` function from the `dart:convert` library to parse the response body into a JSON object. This will allow you to access its values using standard Dart syntax.

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