I am receiving the error below when trying to edit my Home page in the umbraco v8 backoffice. While working on localhost I added a Rich Text Editor style sheet so the user could format text inside of the RTE. All was well on local host, but after publishing the style sheet cannot be found. I have confirmed that the style sheet is on the server in the correct location. The site is in a subfolder of the parent site. I say this because I know I experienced some difficulties with the usync package because of this reason.

The network tab in the browser inspector shows an error with the GetRulesByName endpoint in the Dependency Handler. Not sure what this means or if I have described it sufficiently.

Please let me know if I am missing important debugging information

Possibly unhandled rejection: {"errorMsg":"Failed to retrieve stylesheets ","data":{"Message":"An error has occurred.","ExceptionMessage":"File '/css/StylesheetDropdown.css' is outside this filesystem's root.","ExceptionType":"System.UnauthorizedAccessException","StackTrace":" at Umbraco.Core.IO.PhysicalFileSystem.GetFullPath(String path)\r\n at Umbraco.Core.IO.PhysicalFileSystem.FileExists(String path)\r\n at Umbraco.Core.IO.ShadowWrapper.FileExists(String path)\r\n at Umbraco.Core.Persistence.Repositories.Implement.StylesheetRepository.Get(String id)\r\n at Umbraco.Core.Services.Implement.FileService.GetStylesheetByName(String name)\r\n at Umbraco.Web.Editors.StylesheetController.GetRulesByName(String name)\r\n at lambdamethod(Closure , Object , Object[] )\r\n at System.Web.Http.Controllers.ReflectedHttpActionDescriptor.ActionExecutor.<>cDisplayClass62.