Coding & Debugging Prompts

Error Log Analyzer

Turn a confusing error log into a plain-language summary, likely root cause, and the smallest next debugging step.

✱ By PiSkill TeamFreeClaudeChatGPTGeminiMicrosoft Copilot

Best for

Developers who are stuck on a confusing error log and want a clear explanation, a likely cause, and a small, actionable next debugging step.

Suitable LLM groups

FrontierReasoning

Prompt

You are acting as a senior developer who helps me understand an error log. You must not invent log lines, version numbers, stack traces, file names, or test results that I have not provided. You must not claim any fix has been tested unless I supply actual test results.

Here is my information:

Error log or message: {{input_text}}
What I was doing when the error occurred: {{context}}
Environment details I know, such as language, framework, or version: {{examples}}
What I have already tried: {{constraints}}
What I expected to happen instead: {{desired_output}}

If important details about the environment or the code causing the error are missing, ask me clarifying questions before analyzing it.

Please produce a structured response with the following sections:

1. Plain-language error summary: Explain what this error means in simple, non-technical terms.
2. Likely root cause: Suggest the most probable cause of this error based on the log and context provided.
3. Relevant log lines: Point out which specific lines in the provided log are most important to focus on.
4. Smallest next debugging step: Suggest the single smallest action to take next to narrow down the problem.
5. Possible fix: Suggest a potential fix based on the likely root cause, clearly marked as a suggestion to try, not a guaranteed solution.
6. Missing information: List what additional information would help diagnose this more confidently.
7. Prevention notes: Suggest how to prevent this type of error in the future.

Do not invent log lines, stack traces, or version details that were not provided. Do not claim a fix has been tested or verified unless I share actual test results after trying it.

How to use

Paste your error log or message into the input_text placeholder.
Describe what you were doing when the error occurred and your environment.
Run the prompt in your preferred AI tool.
Answer clarifying questions if key details about your code or environment are missing.
Try the smallest next debugging step first before attempting the suggested fix.

Example input

Error log: TypeError: Cannot read properties of undefined (reading 'map') at UserList.render. Context: happens when loading the user list page after a fresh page load. Environment: React app, using a fetch call to load user data. Tried: confirmed the API endpoint works when tested directly.

Example output

Plain-language error summary: the code is trying to use a list-processing function on something that does not exist yet, likely because the data has not finished loading when the component tries to render it.
Likely root cause: the user data is probably undefined on the first render because the fetch call has not completed yet, and the component is not handling that initial undefined state.
Relevant log lines: the key line is the reference to UserList.render, which points directly to where the map function is being called on undefined data.
Smallest next debugging step: add a console log right before the map call to check whether the data is undefined at the moment of rendering.
Possible fix: add a conditional check or a default empty array so the component does not attempt to call map until the data has loaded, for example rendering a loading state until the fetch completes.
Missing information: the actual component code showing how the fetch result is stored in state would help confirm this diagnosis with more confidence.
Prevention notes: consistently initializing list-type state with an empty array by default, and adding loading state handling for any component that depends on fetched data, can prevent this class of error in the future.

Customization tips

— Paste the relevant code snippet in addition to the log for a more precise diagnosis.
— Mention your specific framework version if you suspect a version-related issue.
— Ask for multiple possible causes ranked by likelihood if the first explanation does not resolve the issue.
— Share the actual test results after trying the fix so a follow-up analysis can confirm or adjust the diagnosis.

FAQ

No, it only analyzes the log and context you give it and will not fabricate additional log lines or details.

Rate this prompt

How helpful was this?

Comments

Sam O.

Used this to ship 6 SEO articles in a week — the FAQ block alone is worth it.

Ines P.

Wish it had a Spanish voice preset, but overall very solid.

Related skills coming soon — browse all skills.

Related articles coming soon — visit the Learn hub.