Paste Your Error. Get an Instant Explanation.
AI-powered error message explainer. Understand what went wrong, why it happened, and how to fix it — in seconds.
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Frequently Asked Questions
What is Explain My Error?
Explain My Error is a free AI-powered tool that instantly explains programming error messages. Paste any error from JavaScript, Python, Java, Go, Rust, or TypeScript and get a clear explanation of what went wrong, why it happened, and exactly how to fix it — no signup required.
How do I fix "TypeError: Cannot read properties of undefined"?
This JavaScript error occurs when you try to access a property on an undefined variable. Fix it by adding optional chaining (obj?.prop), a null check (if (obj !== undefined)), or ensuring the variable is initialized before use. Paste the full error above for a personalized fix.
How do I fix "ModuleNotFoundError: No module named" in Python?
This Python error means the specified package is not installed in your current environment. Run pip install <package_name>, verify your virtual environment is activated, or check the module name for typos.
How do I fix "nil pointer dereference" in Go?
This Go panic happens when you dereference a nil pointer. Add a nil check before accessing the pointer (if ptr != nil), ensure the variable is properly initialized, or use the comma-ok idiom when type asserting.
What languages does Explain My Error support?
JavaScript, TypeScript, Python, Java, Go, and Rust are fully supported with language-specific analysis. The AI can also interpret error messages from C/C++, Ruby, PHP, Swift, Kotlin, and most other programming languages.
Is Explain My Error free?
Yes! You get 10 free error explanations per day with no signup required. Need more? Upgrade to Pro for unlimited explanations, priority processing, and error history starting at $6/month.
How does the AI explain errors?
The AI analyzes the error message structure, identifies the programming language and error type, then generates three things: a plain-English explanation of what the error means, the root cause analysis, and a concrete code fix you can apply immediately.