Can't Display the Visual

I have a Power BI Desktop model uploaded to Power BI (app.powerbi.com) using a Pro account, all latest versions as of May 4, 2016. The reports in Power BI worked fine for 1-2 weeks; however recently, none of the visuals are showing up. The only part showing up are the tables of data. To clarify, the visuals work fine in Power BI Desktop, but don't display in app.powerbi.com.

The file contains a mix of standard and custom visuals, the custom being the latest Attribute Slicer v0.10.0. I've tried switching to all standard visuals but still get the same error. Below is an excerpt of the error:

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Even re-uploading the Power BI desktop files that used to work fine in app.powerbi.com produce the same error.

Any ideas what may be causing this?