After updating to Telerik Reporting v19.0.25.211, the relative path provided to the UriReportSourceResolver is no longer working.
For example, I used to provide only the name of the directory with the reports(e.g. "Reports") to the UriReportSourceResolver, and if there was such a subdirectory inside the project's base directory, the reports were successfully resolved.
This is no longer the case with v19.0.25.211. With this version, I have to provide the absolute path to the "Reports" directory for it to work.