Topic on Project:Support desk

Hello i am having problems when i run the update.php in order to finish the installation of Echo extension.

The error is about a file missing. I checked and that file dosnt exist. "extensio.json". Some one can help me with this ?

root@r2d2-bck:/opt/lampp/bin# ./php /opt/lampp/htdocs/linuxwiki/maintenance/update.php 

Fatal error: Uncaught exception 'Exception' with message '/opt/lampp/htdocs/linuxwiki/extensions/Echo/extension.json does not exist!' in /opt/lampp/htdocs/linuxwiki/includes/registration/ExtensionRegistry.php:107

Stack trace:

#0 /opt/lampp/htdocs/linuxwiki/includes/GlobalFunctions.php(116): ExtensionRegistry->queue('/opt/lampp/htdo...')

#1 /opt/lampp/htdocs/linuxwiki/LocalSettings.php(175): wfLoadExtension('Echo')

#2 /opt/lampp/htdocs/linuxwiki/maintenance/doMaintenance.php(84): require('/opt/lampp/htdo...')

#3 /opt/lampp/htdocs/linuxwiki/maintenance/update.php(217): require_once('/opt/lampp/htdo...')

#4 {main}

  thrown in /opt/lampp/htdocs/linuxwiki/includes/registration/ExtensionRegistry.php on line 107

root@r2d2-bck:/opt/lampp/bin# 

Which exact MediaWiki version is this about? Which exact version of the Echo extension is this about?

mediawiki 1.28

echo version: the lastest

And which **exact** version is "the latest"?

REL1_28 branch for echo doesn't support extension registration, as explained in the extension's installation instructions