blank report after upgrading to 19.1.25.716 (html 5 viewer)

[Ben]

Hi, I recently upgraded from 19.1.25.716 to 19.0.25.313. I updated my stand along designer, regenerated reports, and updated my dlls and js files. I was recieving telerikViewer does not exist errors, so I referenced telerikReportViewer-19.1.25.716.min.js in addition to telerikReportViewer.kendo-19.1.25.716.min.js and the error went away.

When I view the report, the report is blank except for a splitbar. However, if I view the DOM in dev tools, the report is there with data. If I remove the class "trv-pages-pane" from one of the div elements, the report appears (though the parameter input fields are still hidden).

Any idea as to what's going on?

$("#reportViewer7")
                .telerik_ReportViewer({
                    serviceUrl: "http://example.com:7655/api/reports/",
                    authenticationToken: "xxxx", 
                    reportSource: {
                        report: "7_0"
                    }
                });

[Ben]

Turns out there were some breaking css changes. Adding the style and adding the style sheet reference worked

https://docs.telerik.com/reporting/knowledge-base/report-viewer-blank-screen-version-19-1-25-521