# error/debug/missingconfigversion

<div class="mw-content-ltr mw-parser-output" dir="ltr" id="bkmrk-the-most-likely-caus" lang="en">The most likely cause of this error is that the 'version' key is missing from your configuration dictionary.

Steps to fix:

- Open <moodleinstalldir>/version.php</moodleinstalldir>

- Find the value in $version

- Open 'mdl\_config' in database manager

- Insert key after last entry with name = 'version' and value = <value found="" in="" version.php=""></value>

If this doesn't solve your issue, visit [http://moodle.org/mod/forum/view.php?id=28](http://moodle.org/mod/forum/view.php?id=28)

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<small>Source: [docs.moodle.org/503/en/error/debug/missingconfigversion](https://docs.moodle.org/503/en/error/debug/missingconfigversion) — MoodleDocs (GPL) · Imported 2026-11-10.</small>