Errors when debug

Hello,

I switched my website from: http://serveo.pexys-studio.com/ to: http://serveofrance.fr/.
Migration ok, when I debug the site, I have these errors concerning the Duplicator plugin:

PHP Notice: Undefined index: SERVER_ADDR in … \wp-content\plugins\duplicator\views\tools\diagnostics\inc.settings.php on line 72

PHP Warning: exec(): Unable to fork [whoami] in … \wp-content\plugins\duplicator\classes\utilities\class.u.php on line 511

Can you help me understand and correct any problems? Is it related to migration?

Thank you in advance !

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