Power BI Desktop error and refresh data cloud

[GlamSoftware]

Hi,

I'm having some troubles with an exsiting pbix that worked until a few weeks ago.

I haven't changed anything and now I need to modify the report and I can't for the following errors:

1. When I try to open the pbix in the desktop app it shows continuously two errors, and after randomly tries it shows a different error and then it opens. 
   
   (IMG Error 1) https://drive.google.com/file/d/1Xp07DIdULC1e45p1DoHgvaPgkKEjMsm6/view?usp=sharing
   (IMG Error 2) https://drive.google.com/open?id=1CI4qeoneoA-M5tKTMgNmXd3_C6kRCRKo
2. Once I've opened it, I can edit the document and save correctly. Then I publish it to my account, and I get the following error on trying to refresh the report.
   
   (IMG Refresh) https://drive.google.com/file/d/1er69rl6aAEMiCv-wJ0PMQkmmHhhkAH02/view?usp=sharing

How should I fix these errors?

Thanks

[Anonymous]

@GlamSoftware,

What is data source of your dataset? What version of Power BI Desktop do you use and do you use 64 bit or 32 bit Power BI Desktop?

In addition, do you get refresh error in Power BI Service in the case of schedule refresh or manual refresh?

Regards,
Lydia

[GlamSoftware]

Hi,

What do you mean about the datasource? I'm connecting to Sql Server using some views and it is configured as 'Import Data' not Direct Query.

The version of the Power BI Desktop is the following in the image using 64bit:

https://drive.google.com/file/d/1xTbantHiT1VTS4TJz8E868B3vdqUtuJS/view?usp=sharing

I get the error in both cases, scheduled refresh or manual refresh.

Thanks.

[Anonymous]

@GlamSoftware,

How many rows and columns in your tables? What transform steps do you take in Power BI Desktop?

Regards,
Lydia