Error 500 after installing the extension

[Khnaz35]

Hi guys,
I have installed your extension on OC 3.0.3.5 after installing the extension via zip and allowing user group permission and when click install from extension >module the extension was installed but when click on edit it is throwing the error HTTP 500: upon checking my server log i can see:

[23-Nov-2021 10:38:07 UTC] PHP Fatal error: Uncaught Error: Call to undefined function GuzzleHttp_idn_uri_convert() in /home/xxxxx/public_html/xxxxx/system/library/google_sheets/vendor/guzzlehttp/guzzle/src/Client.php:220
Stack trace:
#0 /home/xxx/public_html/xxxxx/system/library/google_sheets/vendor/guzzlehttp/guzzle/src/Client.php(113): GuzzleHttp\Client->buildUri(Object(GuzzleHttp\Psr7\Uri), Array)
#1 /home/xxxxx/public_html/xxxxx/system/library/google_sheets/vendor/guzzlehttp/guzzle/src/Client.php(130): GuzzleHttp\Client->sendAsync(Object(GuzzleHttp\Psr7\Request), Array)
#2 /home/xxxxx/public_html/xxxxx/system/library/google_sheets/vendor/google/auth/src/HttpHandler/Guzzle6HttpHandler.php(34): GuzzleHttp\Client->send(Object(GuzzleHttp\Psr7\Request), Array)
#3 /home/xxxxx/public_html/xxxxx/system/library/google_sheets/vendor/google/auth/src/OAuth2.php(502): Google\Auth\HttpHandler\Guzzle6HttpHandler->__invoke(Object(GuzzleHttp\Psr7\Request))
#4 /home/xxxxx/public_html/xxxxx/system/library/google_sheets/vendor/google/apicli in /home/xxxxx/public_html/xxxxx/system/library/google_sheets/vendor/guzzlehttp/guzzle/src/Client.php on line 220