I saw in your screenshot that you have already created the gallery and there are somerectangles inside. Is this gallery working for now? Whatarethe controls that you are using in this gallery? Would you please share more detailed configuration of your SharePoint column types and perhaps a screenshot of the list so that I could try to reproduce your issue?
Do mask sensitive data before uploading.
Community Support Team _ Mona Li If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.