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Google Cloud Vision API barcode detection

I am facing an issue with the API of Google Cloud Vision. I am adding the API via the API connector in Bubble and using an API key to connect. I need only the features of barcode detection, as I need to read the EAN code from an image I upload or take with the help of upload image feature in bubble. I have a parameter that adds the https: to the url of images before the API call uses these urls to do its job. After that I have a repeating group , where the results of the API call should be displayed. It looks like the API calls are being made successfully as I can check from my google console account. However I am not getting any result in bubble. In the repeating group i have only a (neverending) loading symbol. Any help appreciated.