Chapter 01

The crash report lands.

Two thousand lines of stack trace. A Discord pinging at 3 a.m. Players bouncing off the join screen with 'Could not connect'. You haven't slept and you're not about to.

Chapter 02

Paste. Click. Pattern matched.

Forty-plus crash families recognised by their fingerprint — wrong Java, mixin failure, Sinytra cascade, NoSuchMethodError, watchdog timeout. The Crash Doctor finds yours in milliseconds.

Chapter 03

One thing to try first.

Not a wall of advice. The single most likely root cause + the exact step that fixes it 80% of the time. Built from real crashes we've seen on real customer servers — not a generic LLM guess.

Chapter 04

Players back in. Bed by 03:17.

Fix applied. Server back up. Discord goes quiet. You sleep. The pattern that just saved your night gets added to the database so the next person doesn't lose theirs.

Free, no signup, secrets stripped.

Open the Crash Doctor at coalhosting.com/tools/crash-doctor — works on any Minecraft server, not just ours.

Try it now

Paste any crash-report.txt. Get the cause + one fix to try. Free, no signup, secrets auto-stripped before analysis.

Open Crash Doctor →