Psr compatibility

[Schnok]

Hello Team,

I have a Joomla 5 site with the Manticore template. This week I updated to Joomla 5.1.1 and just before I updated gantry to 5.5.19. After the Joomla update my site crashed.
After some research it seems to me that the problem comes from Psr. I commented the lines I specify in the two attached screenshots and the site restarted.
The files concerned are :

• libraries/gantry5/vendor/composer/autoload_psr4.php
• libraries/gantry5/vendor/composer/autoload_static.php

Best regards,
Phil