Plesk Let’s Encrypt Certificate error on the Web server.

Hi,

We are trying to install Let’s Encrypt Certificate on a sub domain in our Web server. Let’s encrypt certificate is already installed on 2 sub domains hosted on that server.
Now while installing Let’s Encrypt on the third domain we are getting the attached error. [ image attached].

What we have tried so far:
We have SNI enabled on the Plesk server.
We have enabled SSL/TLS support in the Domains Hosting Settings page.
The Other 2 sub domains on this server did not...

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