JAVASCRIPTWarningFramework ErrorJune 8, 2026

Framework Error

Error: Mismatched dependency version for react-router-dom. Expected ^6.3.0 but got ^6.4.2

What This Error Means

This error occurs when a project is using a version of a popular JavaScript framework (in this case, react-router-dom) that is not compatible with another dependency in the project. This can lead to unexpected behavior or crashes.

Why It Happens

This error typically happens when a developer updates one dependency in their project without updating other dependencies that rely on the same version. It can also occur when a project is using a specific version of a framework in its package.json file, but another dependency is using a newer version.

How to Fix It

  1. 1To fix this error, you need to update the version of the framework in your project to match the version expected by other dependencies. You can do this by running the following commands in your terminal:
  2. 2 npm install react-router-dom@^6.3.0
  3. 3 npm update
  4. 4Alternatively, you can also check the documentation of the framework and other dependencies to see if there are any newer versions that are compatible with each other.

Example Code Solution

❌ Before (problematic code)
JavaScript
import { BrowserRouter } from 'react-router-dom@6.4.2'; // Using the wrong version of react-router-dom
✅ After (fixed code)
JavaScript
import { BrowserRouter } from 'react-router-dom@6.3.0'; // Using the correct version of react-router-dom

Fix for Error: Mismatched dependency version for react-router-dom. Expected ^6.3.0 but got ^6.4.2

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