Your code isn't doing what it's supposed to. Maybe it crashed. Maybe it's silently doing the wrong thing. Maybe it worked yesterday and doesn't today, and you have no idea why. Whatever the symptom, we trace it to the actual cause and fix it — not just patch around it.
This Is For You If...
You're a founder or solo dev and something's broken right before a demo, launch, or investor call
Your team's sprint is blocked by a bug nobody's had time to dig into
You're a student or freelancer and inherited code you didn't write, and it's throwing errors you don't understand
You've been staring at the same error for hours and just need a second pair of eyes
The bug only happens sometimes, or only in production, and you can't pin it down
Self-Diagnostic Checklist
Not sure if this is worth outside help, or how urgent it is? Run through this quickly:
Ask Yourself | What It Suggests |
Did this work before, and something changed recently (a commit, an update, a deploy)? | Likely a regression — the cause is probably identifiable and fixable fast |
Does the bug happen every time, or only sometimes? | Intermittent bugs take longer to isolate and usually need logs or a reproducible trigger |
Does it happen locally, in production, or both? | Environment-specific bugs often point to config, not logic |
Do you have an error message, stack trace, or log output? | Having this ready cuts diagnosis time significantly |
Have you already tried a fix that didn't work? | Tell us what you tried — it rules out dead ends and speeds things up |
Is this blocking a deadline, or can it wait? | Helps us flag it as urgent vs. standard turnaround |
If you answered "not sure" to most of these, that's completely fine — send us what you have and we'll fill in the gaps.
Common Bugs We Fix
Category | What It Covers |
Compilation & Build Errors | Code that won't run yet — missing modules, dependency conflicts, syntax errors |
Runtime & Crash Errors | App runs, then crashes — unhandled exceptions, null references, blank screens |
Logic & Functional Bugs | Nothing crashes, but the output or behavior is wrong |
UI & Frontend Bugs | Broken layouts, unresponsive elements, cross-browser issues |
API & Backend Response Bugs | Your backend returns wrong data, bad status codes, or broken responses |
Authentication & Session Bugs | Login failures, session drops, broken permissions |
Dependency & Library Conflicts | A package or SDK update broke something that used to work |
Intermittent & Hard-to-Reproduce Bugs | Bugs that only happen sometimes, or only in production |
Memory, Performance & Resource Bugs | Leaks, slowdowns, and resource exhaustion at scale |
Legacy & Inherited Codebase Bugs | Debugging code you didn't write |
Language & Framework-Specific Bugs | Bugs tied to the quirks of your specific stack |
Below is more detail on each — jump to the one closest to what you're seeing, or skip straight to sending us your error if you're not sure which applies.
Compilation & Build Errors
Your code won't even run yet. Missing modules, dependency conflicts, syntax errors, or a build that works locally but fails everywhere else. Module not found errors, dependency resolution failures, TypeScript compile errors, bundler config issues, "works on my machine" build failures.
Runtime & Crash Errors
The app runs, then breaks. Crashes on launch, unhandled exceptions, null references, or a blank white screen with no clue why. App crashes on startup, unhandled promise rejections, undefined is not a function, white screen of death, segmentation faults.
Logic & Functional Bugs
Nothing crashes — it just does the wrong thing. Wrong output, broken calculations, a feature that doesn't behave the way it should. Feature not working as expected, wrong calculation output, conditional logic errors, broken business logic.
UI & Frontend Bugs
Broken layouts, unresponsive buttons, visual glitches that only show up on certain browsers or screen sizes. Responsive layout bugs, cross-browser inconsistencies, broken forms, elements not rendering correctly.
API & Backend Response Bugs
Your own backend is returning the wrong thing — bad data, wrong status codes, endpoints that don't behave. API returning wrong data, broken endpoint logic, incorrect status codes, malformed responses.
Authentication & Session Bugs
Users can't log in, sessions drop unexpectedly, or permissions are letting the wrong people see the wrong things. Login failures, session timeout bugs, broken role/permission checks, token expiry issues.
Dependency & Library Conflicts
Something used to work, then a package updated and broke it. Version conflicts, SDK issues, plugin incompatibilities. Dependency version conflicts, broken after package update, plugin/SDK bugs, peer dependency errors.
Intermittent & Hard-to-Reproduce Bugs
The bug that only happens sometimes. Race conditions, flaky behavior, issues that only show up in production. Random/inconsistent failures, race conditions, bugs that vanish when you try to reproduce them.
Memory, Performance & Resource Bugs
Leaks, slowdowns, and resource exhaustion that don't show up until things scale. Memory leaks, infinite loops, high CPU usage, app slowing down over time.
Legacy & Inherited Codebase Bugs
Debugging code you didn't write — undocumented, outdated, or abandoned by whoever built it before you. Bugs in inherited codebases, undocumented code causing errors, old framework quirks.
Language & Framework-Specific Bugs
Bugs tied to the quirks of your specific stack — React, Python, Node.js, Java, and beyond. React/Vue state bugs, Python exceptions, Node.js async errors, framework-specific edge cases.
Don't see your exact issue listed? Send it to us anyway — most bugs don't fit neatly into one box.
What We Need From You
Sharing these upfront speeds up diagnosis significantly — but if you don't have all of them, send what you've got and we'll ask for the rest.
What to Share | Why It Helps |
The exact error message or stack trace | Tells us precisely where and how it's failing |
A link to your repo, or the relevant file(s) | Lets us see the actual code instead of guessing from a description |
Steps to reproduce it (if known) | Cuts diagnosis time significantly, especially for intermittent bugs |
What changed recently (a commit, a deploy, a package update) | Regressions are usually traceable to a specific recent change |
Your language, framework, and version | Some bugs are version-specific and this rules out a lot of dead ends |
What you've already tried | Prevents us from re-testing things you've already ruled out |
Urgency / deadline | Helps us prioritize and set the right turnaround expectation |
Common Mistakes to Avoid
Before you spend more hours on it yourself, here's where people often lose time:
Instinct | Why It Doesn't Help | Do This Instead |
Rewriting the whole function/file from scratch | Often reintroduces the same bug in a new form, and loses working logic | Isolate the smallest piece of code that reproduces the issue first |
Randomly changing code until the error disappears | Can mask the real bug instead of fixing it, and may introduce new ones | Confirm the root cause before changing anything |
Ignoring the full stack trace and only reading the last line | The actual failure point is often several lines up in the trace | Read the full trace, or send it to us as-is — we'll read it properly |
Assuming it's the same bug as a similar-looking issue online | Similar symptoms can have completely different causes | Treat the specific error message and context as the source of truth |
Restarting the server/app repeatedly hoping it resolves itself | Fixes the symptom temporarily at best, masks the real issue | Diagnose why it's happening, especially if it's recurring |
Deleting and reinstalling all dependencies as a first step | Sometimes necessary, but often skips actually identifying the conflict | Identify the specific conflicting dependency first, if possible |
How It Works
Step | What Happens |
1. Tell us what's broken | Paste the error, describe the symptom, or share your repo — no need to explain your whole codebase upfront |
2. We diagnose it | A developer reviews the issue and confirms the root cause before touching anything |
3. We fix and test it | The fix is implemented and verified against the actual bug, not just the symptom |
4. We explain what happened | You get a short, plain-English rundown of what was wrong and why, so it doesn't happen again |
5. We follow up if needed | If the same issue resurfaces shortly after, follow-up is included as part of the engagement |
Why Codersarts
We've fixed bugs across nearly every major language and framework — for solo founders under deadline pressure, dev teams stuck mid-sprint, and students staring at code they didn't write. We don't just patch the symptom; we explain what actually went wrong, so you're not back here next week with the same issue.
Turnaround Time
Most bugs are diagnosed within a few hours of submission. Straightforward fixes are typically resolved same-day; more complex or hard-to-reproduce bugs are scoped with a clear timeline upfront before we start.
FAQ
Question | Answer |
Do I need to share my entire codebase to get help? | No. Send us the error, the relevant file, or a repo link — we'll tell you if we need more. |
Can you fix a bug without seeing it happen live? | Often, yes — especially with a clear error message or logs. For intermittent bugs, we may ask a few questions to help narrow down the trigger. |
What if the bug isn't listed in your categories above? | Send it anyway. The categories above cover the most common patterns, but most real bugs are a mix of a few of them. |
Do you work with my specific language or framework? | Very likely. We regularly work across JavaScript/TypeScript, Python, Java, PHP, Ruby, Go, and their major frameworks. |
Is this confidential if it's for a work project? | Yes. We don't contact your employer or client, and an NDA is available on request. |
What if the fix doesn't actually solve the problem? | We test against the specific issue you reported before handing it back. If something's still off, follow-up is included. |
Related Services
Deployment & DevOps Support
Database & Data Issues
Performance & Scalability
Code Quality & Refactoring
Emergency / Production-Down Support
Stuck on a Bug Right Now?
Don't lose more time guessing. Send us the error and get a diagnosis before you commit to anything.