Also having this issue. First time using your plugin, once this starts working I’d love to give it a try.
Hi Sanyog,
I am running ubuntu 18.04 on one server and it is working fine, but I want to move away from this hosting provider.
The server with these errors is running CloudLinux.
I spoke to the CloudLinux provider and they will not recompile gd or the other modules to support webp.
So, I am thinking of just using a remote converter (pointed back to the ubuntu server mentioned above) however the remote converter isn’t working either.
I saw a ticket about that issue here (https://wordpress.org/support/topic/remote-conversion-access-denied-invalid-api-key/).
Don’t remember seeing it mentioned anywhere, but is centos required for the remote conversion server?
I am having the same issue. Same result with your test url too.