Minecraft log guides
Short guides for the moment something breaks and someone asks for your log.
- How to find your Minecraft logslatest.log and crash reports sit in different places for the client, servers and launchers like Prism and Modrinth App. Paths for Windows, macOS and Linux.
- How to read a Minecraft crash reportIt looks like a wall of text, but the answer usually sits in three places: the Description line, the stack trace and the Caused by lines.
- How to share a log file without leaking private detailsLog files can quietly hold your IP address, your Windows username and even login tokens, so check before you paste one anywhere.
- How to fix OutOfMemoryError in MinecraftCrashed with java.lang.OutOfMemoryError? Learn what it means and how to give the game or server more memory from your launcher or start command.
- How to fix UnsupportedClassVersionError in MinecraftMinecraft or a mod wants a newer Java than the one running it. See which Java each version needs and how to check yours.
- What "Can't keep up! Is the server overloaded?" meansThat warning shows up when a tick runs long. Read what it means, when to shrug it off and how to track down the lag.
- What "Exception in server tick loop" meansIt's only a label on a server crash report, and the real cause is the exception under it. Find out how to read it and what usually breaks.
- How to fix "Mixin apply failed" in MinecraftA mod couldn't patch the game, usually thanks to a wrong version, a wrong loader or a clash with another mod. This is how you find which one.
- How to fix a mod that "requires" another modIf a mod says another mod is missing, the fix is installing that second mod. We show how to read the message on Fabric and Forge.
- How to fix "Could not reserve enough space for object heap"Java refused to start because the memory it was asked for wasn't there. Too much RAM, a 32-bit Java or an -Xms bigger than -Xmx are the usual causes.
- How to fix "Failed to bind to port" on a Minecraft serverThe server can't use its port, normally because another program has it or server-ip is wrong. The fix is short.
- minelog and mclo.gsA bigger size limit, a longer expiry window and redaction in your browser first. See how minelog compares to mclo.gs and how mclo.gs tools work with it.
- minelog and mclogs.minestrator.commclogs.minestrator.com runs the same open-source software as mclo.gs, hosted by MineStrator. Compare its limits to minelog and learn how to switch a tool.
- minelog and PastebinPastebin is a general paste tool with no redaction, a 512 KB guest limit and no Minecraft parsing. See when minelog or mclo.gs fits a Minecraft log better.