Error after Upgrading Report Metadata: M Engine error: 'Microsoft.Data.Mashup; Token Comma expected

[Anonymous]

Hi all,

After recently updating to the October 2020 version, I was prompted to Upgrade report to use the enhanced metadata.

After clicking "Upgrade report", the following error message is being returned and I am unsure of how to resolve this.

I have checked all of my queries, all have no syntax errors and were working perfectly before this update.

Any advice or recommendations is much appreciated.

Kind regards

Matthew 

[Anonymous · Accepted solution]

Update - I have managed to solve this problem thanks to the assistance of this guide https://www.fourmoo.com/2019/12/03/aas-processing-error-error-returned-m-engine-error-microsoft-data...

I was missing a carrier in one of my queries. Unfortunately the error message displayed didn't point to the right query, so I had to trawl through all of them.

[amitchandak]

@Anonymous , Refer for open issue on Oct 2020 release -https://community.powerbi.com/t5/Issues/idb-p/Issues.

If needed create a new one.

[Anonymous]

FYI I have tested this on a colleagues' September 2020 version and am getting the same error