Minecraft Crash Report Analyzer
Paste your crash report or log excerpt and find out in seconds what crashed your server and how to fix it.
Copy the relevant section from your latest.log or your server's crash-reports folder — the more context, the more accurate the analysis.
Your pasted text is never stored — we only anonymously count which error pattern was recognized.
Your text is too long to analyze — trim it down to the relevant lines (256 KB max).
Analysis result
No known error pattern found
We didn't recognize any known crash pattern in your text. If your server stopped abruptly with no error message, that's often memory pressure — a crash from running out of memory sometimes leaves no error line at all. Checking the RAM Calculator can still be worth it.
Looks like a memory problem
Several recognized patterns point to too little RAM. Our RAM Calculator shows you in seconds how much memory your server actually needs.
Go to the RAM CalculatorReady for a more stable server?
Choose the right game server and review its resources, settings, and final monthly price before ordering.
View game serversWhat is a Minecraft crash report?
When a Minecraft server crashes, it almost always leaves a trail: either a crash-report-*.txt file in the crash-reports folder, or the last lines of latest.log. That text usually contains a Java exception with a stack trace that describes exactly what went wrong — but it is hard to read for most server owners. Our Crash Report Analyzer scans exactly that text for known error patterns and turns them into a plain-English cause and a concrete fix. That way you find out what to do in seconds instead of digging through endless log lines.
How to use the Crash Report Analyzer
Open your server's crash-reports file or latest.log and copy the relevant section — ideally everything from the first error line onward, or the whole crash block. Paste that text into the box above and click "Analyze". The analyzer scans your text for known patterns and shows you a cause and a concrete fix for every match it finds. If it finds no known pattern, you still get an honest note instead of a made-up diagnosis.
Which crash causes does the analyzer detect?
The analyzer keeps recognizing more common error patterns across several areas: memory issues like a full Java heap, GC overhead, watchdog timeouts or an overloaded server, plus a disrupted tick loop. It also covers startup issues such as a port already in use, a Java version mismatch, no disk space left, an unaccepted EULA, or a failed datapack load. It further detects plugin and mod errors — from corrupt JARs through mixin conflicts to failed scheduled tasks — plus Geyser/cross-play quirks and harmless notice banners. Every pattern is based on error lines actually observed on real Minecraft servers, not on guesswork.
What happens to the text you paste?
The crash report or log excerpt you paste is never stored — the analysis runs at request time and the text does not exist anywhere on our side afterward. We only keep an anonymous count of which error pattern was recognized, to help improve our signal catalog — never the content of your text itself. That is true whether you are a customer of ours or just using the tool once. This means you can safely paste even sensitive log excerpts without server names, IPs or player data ending up anywhere.
Common errors
The most common Minecraft server crash causes at a glance — with the literal error line, cause and fix.
- java.lang.OutOfMemoryError: Java heap space fix Critical
- GC overhead limit exceeded — Java memory error explained Critical
- Server watchdog timeout — why your Minecraft server crashes Critical
- Can't keep up! Is the server overloaded? — cause & fix Warning
- Exception in server tick loop — find the real cause Critical
- No space left on device — Minecraft server out of disk space Critical
- You need to agree to the EULA — Minecraft server won't start Critical
- Failed to load datapacks — Minecraft server won't start Critical
- Mixin apply failed — fix a mod incompatibility Warning
- Could not save data / Failed to save level — fix world save errors Critical
- FAILED TO BIND TO PORT — Minecraft server port in use Critical
- UnsupportedClassVersionError — wrong Java version Critical
- NoClassDefFoundError / ClassNotFoundException — fix mod conflicts Warning
- Could not load plugin JAR — fix a corrupt plugin file Critical
- Error occurred while enabling — plugin crashes on startup Critical
- Satisfactory: Self-Signed Certificate — not an error Harmless
- Satisfactory: SSL handshake failed — harmless message Harmless
- Satisfactory: HTTP listener connection error — harmless Harmless
- Segmentation fault (core dumped) — game server crashed Critical
- The server is running in online mode! — login plugin won't start Critical
- SteamCMD "App state" error — game files won't download Critical
- CS2: No Navigation Mesh — why bots don't move Notice
- tried to join with an invalid session — cause & fix Warning
- Recoverable errors when loading section — removed mod blocks Warning
- PluginRemapper exception — Paper plugin not compatible Warning
- Could not hook into — missing plugin dependency Warning
- Couldn't verify username because servers are unavailable — Mojang login service down Warning
- Tried to load unrecognized recipe — cause & fix Notice
- Detected setBlock in a far chunk — world generation warning Notice
- Dispatched Async: tps — harmless TPS measurement explained Harmless