Can't change administrator email address

[sparq]

When I try to change the administrator email address in Plesk I get this error:

Unable to update administrator information: Error 2 at CMMFile::CMMFile: open file C:\inetpub\vhosts\default\htdocs\index.html: The system cannot find find the file specified.

I deleted these default html files and replaced them with my own. Where is the administrator email address stored? Can I change it manually?

 

[sparq]

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