Your web app might behave in unexpected ways if your Domino deployment has IFrame security enabled or if it requires a content security policy to be defined for web apps. This might affect your web app’s access to external resources (images, APIs, and so on). If your web app requires access to certain resources to function properly, your Domino administrator might have to whitelist those resources.
To give your web app access to external resources that might be blocked, you must identify and gather the URLs of those resources using your web browser.
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Open a web browser.
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Go to your web app in Domino.
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Start and open your web app.
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After the app is open and running, open your browser’s web console.
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Locate the URLs of the resources your app must access. In Chrome, they’re highlighted in red and are typically preceded by a message like “Refused to connect to…” (or similar).
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Share these URLs with your Domino administrator and request that the URLs be whitelisted.
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After the URLs are whitelisted, stop and restart your Domino web app. Your web app should now have access to these resources.
If you’re a Domino administrator, see Web App Central Configuration.