Seble, Here is the error from console when attempting to sort by column:
rocket.min.js:2 Uncaught TypeError: Cannot read property 'toString' of null
at HTMLScriptElement.l (rocket.min.js:2)
at HTMLScriptElement.s.(anonymous function) [as addEventListener] (https://ajax.cloudflare.com/cdn-cgi/scripts/935cb224/cloudflare-static/rocket.min.js:2:8619)
at Sys.UI.DomEvent.addHandler (ScriptResource.axd?d=URL3O6vQzjyZSnar7bWArUUCNCvv-l0K20kMolZgCeW67GxtsaIzqd_H2L5I5FxE-_xBytvtKIRS_D6RfLRT9Uw5apIBzdr5lI_kAgE0GDCiicGSSg3oAFUvbRYgCgLeawyHmeKNogy2kED98j0Nr7pmDFfZ0ZsbIHJOBUe9pzarwPzU0L1_DjbrN6Qxm10-0&t=ffffffffad4b7194:5)
at Sys._ScriptLoaderTask._addScriptElementHandlers (ScriptResource.axd?d=URL3O6vQzjyZSnar7bWArUUCNCvv-l0K20kMolZgCeW67GxtsaIzqd_H2L5I5FxE-_xBytvtKIRS_D6RfLRT9Uw5apIBzdr5lI_kAgE0GDCiicGSSg3oAFUvbRYgCgLeawyHmeKNogy2kED98j0Nr7pmDFfZ0ZsbIHJOBUe9pzarwPzU0L1_DjbrN6Qxm10-0&t=ffffffffad4b7194:5)
at Sys._ScriptLoaderTask._executeInternal (ScriptResource.axd?d=URL3O6vQzjyZSnar7bWArUUCNCvv-l0K20kMolZgCeW67GxtsaIzqd_H2L5I5FxE-_xBytvtKIRS_D6RfLRT9Uw5apIBzdr5lI_kAgE0GDCiicGSSg3oAFUvbRYgCgLeawyHmeKNogy2kED98j0Nr7pmDFfZ0ZsbIHJOBUe9pzarwPzU0L1_DjbrN6Qxm10-0&t=ffffffffad4b7194:5)
at Sys._ScriptLoaderTask.execute (ScriptResource.axd?d=URL3O6vQzjyZSnar7bWArUUCNCvv-l0K20kMolZgCeW67GxtsaIzqd_H2L5I5FxE-_xBytvtKIRS_D6RfLRT9Uw5apIBzdr5lI_kAgE0GDCiicGSSg3oAFUvbRYgCgLeawyHmeKNogy2kED98j0Nr7pmDFfZ0ZsbIHJOBUe9pzarwPzU0L1_DjbrN6Qxm10-0&t=ffffffffad4b7194:5)
at Sys._ScriptLoader._loadScriptsInternal (ScriptResource.axd?d=z150tmJTfw7seCni0vVTiBrt3Eb0ynuN8WsCXqiYt0LtpYOwLbrbQYEsI0IMyDd83a6SlW9w6FXxaGJrshYr5GRAx94aMnIUStWemn5747bfgP8bw0Af8xIabumrexuunrNc39bF-ZJis0bP6uTapnsLfgKB2mh3R38VbdCKesiDVAaRCtxbOFzeTISxVoac0&t=ffffffffad4b7194:5)
at Sys._ScriptLoader._nextSession (ScriptResource.axd?d=z150tmJTfw7seCni0vVTiBrt3Eb0ynuN8WsCXqiYt0LtpYOwLbrbQYEsI0IMyDd83a6SlW9w6FXxaGJrshYr5GRAx94aMnIUStWemn5747bfgP8bw0Af8xIabumrexuunrNc39bF-ZJis0bP6uTapnsLfgKB2mh3R38VbdCKesiDVAaRCtxbOFzeTISxVoac0&t=ffffffffad4b7194:5)
at Sys._ScriptLoader.loadScripts (ScriptResource.axd?d=z150tmJTfw7seCni0vVTiBrt3Eb0ynuN8WsCXqiYt0LtpYOwLbrbQYEsI0IMyDd83a6SlW9w6FXxaGJrshYr5GRAx94aMnIUStWemn5747bfgP8bw0Af8xIabumrexuunrNc39bF-ZJis0bP6uTapnsLfgKB2mh3R38VbdCKesiDVAaRCtxbOFzeTISxVoac0&t=ffffffffad4b7194:5)
at Sys.WebForms.PageRequestManager._onFormSubmitCompleted (ScriptResource.axd?d=z150tmJTfw7seCni0vVTiBrt3Eb0ynuN8WsCXqiYt0LtpYOwLbrbQYEsI0IMyDd83a6SlW9w6FXxaGJrshYr5GRAx94aMnIUStWemn5747bfgP8bw0Af8xIabumrexuunrNc39bF-ZJis0bP6uTapnsLfgKB2mh3R38VbdCKesiDVAaRCtxbOFzeTISxVoac0&t=ffffffffad4b7194:5)