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Following errors observed in Network browser network trace:
Mixed Content: The page at 'https://URL...' was loaded over a secure connection, but contains a form that targets an insecure endpoint '<Custom_URI>'. This endpoint should be made available over a secure connection. |
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https://developer.android.com/guide/components/intents-filters
A workaround is to replace form.submit with location.assign or location.replace in the javascript.
Workaround example below:
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