This it the url request which i can see google dev tools and I confirmed with graph that is shows results.
Below error from google dev tools. 5 is listitemid.
TableBody.html:61 ERROR Error: Cannot find a differ supporting object '5' of type 'string'. NgFor only supports binding to Iterables such as Arrays.
at NgForOf.push.../../../Program Files/Radzen/resources/node_modules/@angular/common/fesm5/common.js.NgForOf.ngDoCheck (common.js:3368)
at checkAndUpdateDirectiveInline (core.js:22102)
at checkAndUpdateNodeInline (core.js:23363)
at checkAndUpdateNode (core.js:23325)
at debugCheckAndUpdateNode (core.js:23959)
at debugCheckDirectivesFn (core.js:23919)
at Object.eval [as updateDirectives] (TableBody.html:2)
at Object.debugUpdateDirectives [as updateDirectives] (core.js:23911)
at checkAndUpdateView (core.js:23307)
at callViewAction (core.js:23548)