Uncaught exception during upgrade: Exception: Baikal\Model\Config->parseConfig(): constant 'PROJECT_DB_MYSQL_PASSWORD' has been found multiple times in the config file;

[juedan]

Baikal version: 0.6.1

• I have searched open and closed issues for duplicates
• I have installed the release zip, not the source code zip
• I followed the upgrade instructions: backup of Baikal folder and database
• I let the Specific folder untouched
• PHP Version 7.2 and 7.3
• I have moved the whole, untouched Specific folder to the new installation

Problem:
After calling the admin panel: .../html/admin/ I got the page with "... Upgrading Baïkal from version 0.5.2 to version 0.6.1 ... ". I clicked on start upgrade and the I got the following error message:

Uncaught exception during upgrade: Exception: Baikal\Model\Config->parseConfig():
constant 'PROJECT_DB_MYSQL_PASSWORD' has been found multiple times in the config file;
stopping execution in /home/dankowei/baikal/Core/Frameworks/Baikal/Model/Config.php:114 Stack trace:
#0 /home/dankowei/baikal/Core/Frameworks/Baikal/Model/Config.php(40): Baikal\Model\Config->parseConfig('__construct('/home/dankowei/...')
#2 /home/dankowei/baikal/Core/Frameworks/BaikalAdmin/Controller/Install/VersionUpgrade.php(90): BaikalAdmin\Controller\Install\VersionUpgrade->assertConfigWritable()
#3 /home/dankowei/baikal/Core/Frameworks/BaikalAdmin/Controller/Install/VersionUpgrade.php(61): BaikalAdmin\Controller\Install\VersionUpgrade->upgrade('0.5.2', '0.6.1')
#4 /home/dankowei/baikal/Core/Frameworks/Flake/Core/Render/Container.php(69): BaikalAdmin\Controller\Install\VersionUpgrade->render()
#5 /home/dankowei/baikal/Core/Frameworks/Flake/Controller/Page.php(85): Flake\Core\Render\Container->renderBlocks()
#6 /home/dankowei/baikal/html/admin/install/index.php(92): Flake\Controller\Page->render()
#7 {main}
I have checked all config.php files but there is only one "PROJECT_DB_MYSQL_PASSWORD" constant. Where should I look for the error?

Many thanks.

PS: Currently I working on a connection for baikal to PostgreSQL

[juedan]

No ideas what's going on there?

[ByteHamster]

Make sure that the definition is not added multiple times. Our parser is quite fragile, so it will also detect commented-out duplicates.

[juedan]

I didn't make any changes on version 0.5.2 und followed the upgrade instructions. Changes were made by the installation process of baikal 0.5.2 itself (login data and such things) and NEVER by me!