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https://forum.joomla.org/viewtopic.php?t=917945
https://github.com/joomla/joomla-cms/issues/17514
https://joomla.stackexchange.com/questions/8984/update-joomla-from-2-5...
https://stackoverflow.com/q/28963158
https://docs.joomla.org/J3.x:Errors_in_2.5.26,_3.2.6,_and_3.3.5
https://joomla.stackexchange.com/questions/21460/invalid-login-when-at...
https://www.joomla-tips.org/joomla-troubleshooter/error-invalid-login-...
https://joomla.stackexchange.com/tags/update
https://www.joomshaper.com/blog/upgrade-from-joomla-2-5-to-joomla-3-x-...
https://www.joomlacontenteditor.net/support/forum/98707-error-updating...