Hi, I have an old Moodle version 2.5.4. I am now trying to upgrade it to 3.4. However, it seems that it is not possible to do it directly, so trying to upgrade it first to 3.0 and then to 3.4. I have done the following,
1. Backed up the old moodle 2.5.4 (software, database and filestore).
2. Downloaded the Moodle 3.0 version and unpacked the package.
3. Copied the config.php from the old moodle to the new moodle directory (which points to the existing old database and filestore).
4. Restarted the apache and accessed the Moodle from the browser.
I get the login page but with an error saying that "Error reading from database". I could not see any error logs in apache. I tried switching on the debug mode in the database, but it did not reflect it in the page. I expected Moodle to upgrade the DB from old version to new version when the new source code is accessed from the browser (with some upgrade steps), however that is not happening.
I am stuck with this, any help would be greatly appreciated.