py-nba
Last Updated: May 24, 2019
·
12.52K
· carlosagile

Moodle easy solution to "Failed to unserialise data from file. Either failed to read, or failed to write."

Error in Moodle:

Coding error detected, it must be fixed by a programmer: Failed to unserialise data from file. Either failed to read, or failed to write.

Problem:
There was a file locked by cache store system.

Solutions:

1.Execute script purgecaches to reset the cache system.

php /moodle/admin/cli/purge_caches.php

2.Remove all files and directories unde directory /moodledata/cache

Finally, please don't edit core files to solve this problem. Think, in Moodle always was a alternative solutions. Find in Moodle tracker system .

3 Responses
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27820

:-) Very Thanks

over 1 year ago ·
31727

Very useful! Thanks :)

12 months ago ·
33103

Te como pa polla

8 months ago ·