We did setup Varnish correctly and working fine to cache the files.
However, when Magento try to purge cache on product saving or from cache management, we have the following error:
[2024-04-16T02:27:24.463621+00:00] main.CRITICAL: No cache server(s) could be purged Cache host: 10.0.2.112:80resulted in error message: Deprecated Functionality: strtolower(): Passing null to parameter #1 ($string) of type string is deprecated in /bitnami/magento/vendor/laminas/laminas-http/src/Client/Adapter/Socket.php on line 457 {"method":"POST","url":"https://domain.tld/index.php/admin/admin/cache/massRefresh/","invalidateInfo":{"servers":[{"Laminas\Uri\Uri":"//10.0.2.112:80/"}],"formattedTagsChunk":".*"}} []
curl is working fine to reach Varnish.