🔌 Testing outbound connection to: aws-1-eu-north-1.pooler.supabase.com on port 6543...
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❌ FAILURE!
Could not connect to the server.

Error Number:  111
Error Message: Connection refused

This almost certainly means your cPanel hosting provider is BLOCKING outbound connections on port 6543.
You will need to contact their support and ask them to open outbound TCP port 6543 for your account.