I recenly started gettting 504 from Laravel app using valet had some issues while debugging it. Basically it boils down to NGINX.
Add these values to your
proxy_connect_timeout 600; proxy_send_timeout 600; proxy_read_timeout 600; send_timeout 600; fastcgi_read_timeout 300; fastcgi_buffers 8 128k; fastcgi_buffer_size 256k;
Just make sure after adding values to
valet.conf file you run
Hope this solves your issue!
Have a nice day!