Public Share not working

I was sharing a report publicly which used to work fine. Now, when I try to open the report using the link from a non-Google account, I get the system error on every chart within the report (apart from where GA4 is the data source).

I have tried reconnecting all data sources, the data credentials are set to myself (the owner of the report) and I have tried sharing with Link Setting 'Public' and 'Unlisted' without success.

Can anyone tell me what's going wrong? None of the suggested fixs found in this board have worked for me. 

Thanks in advance. 

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