As with @Greg_Deckler, I have to speculate concerning some of the characteristics of your problem because we don't have access to your data.
Is it the case that the entity (without a value) shows up as null in the data view in pbi desktop? If that is the case, you can go into the query editor, and replace the null values with 0. When in query editor, you simply:
1. Select the desired column
2. Click replace values
3. Change null to 0
If you close and apply, the model will update existing null values with 0 in the specified column, and your entities will show up in your bar chart.
Could you create a Measure and include an IF(ISBLANK() in it and if so set it to the MAX of the value or some static number like 100? Not ideal, but at least it would not be zero. Also, you could potentially create another measure for a tooltip so that you could show "No data" when they hover over the value.
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