I only get a blank (empty) page when running DokuWiki or the output stops right after the template header. What's the problem?

This indicates some fatal error occurred which aborted the running PHP process without sending any output to the browser.

Fatal errors are commonly triggered by faulty plugins, language or config files. To find out what happened, you need to look up the error message in the web server error log.

The findbadphp.php script might help you with finding certain errors, but is no replacement for having the real error message from the error log.

Adding &purge=true to the URL may fix a problem if an error persists after upgrading a faulty plugin.

If the full template (e.g. header and footer) but the wiki content isn't rendered your disk might be full or refer to largepage.