Clicking on settings generates prop type error

[hcuffy]

• Log in to the league.
• Open the console
• Create a league -> open the league -> Click on settings.

In the setting this error will be generated

VM2888 checkPropTypes.js:19 Warning: Failed prop type: Invalid prop roles[0]of typestringsupplied toIcon, expected object. in Icon (created by Connect(Icon)) in Connect(Icon) (created by StaffList) in span (created by TableBody) in td (created by TableRowColumn) in TableRowColumn (created by TableBody) in tr (created by TableRow) in TableRow (created by TableBody) in tbody (created by TableBody) in ClickAwayListener (created by TableBody) in TableBody (created by TableBody) in TableBody (created by TableTemplate) in table (created by Table) in div (created by Table) in div (created by Table) in Table (created by TableTemplate) in div (created by TableTemplate) in TableTemplate (created by StaffList) in div (created by StaffList) in StaffList (created by Connect(StaffList)) in Connect(StaffList) (created by Route) in Route (created by SettingsRoutes) in div (created by SettingsRoutes) in SettingsRoutes in div (created by TabTemplate) in TabTemplate (created by Tabs) in div (created by Tabs) in div (created by Tabs) in Tabs (created by LeagueTabs) in LeagueTabs (created by Dashboard) in div (created by Dashboard) in div (created by Dashboard) in Dashboard (created by Connect(Dashboard)) in Connect(Dashboard) (created by Route) in Route (created by Content) in div (created by Paper) in Paper (created by Content) in div (created by Content) in div (created by Content) in Content (created by loadState) in loadState (created by Connect(loadState)) in Connect(loadState) (created by Route) in Route (created by App) in div (created by App) in Router (created by BrowserRouter) in BrowserRouter (created by App) in MuiThemeProvider (created by App) in App (created by Connect(App)) in Connect(App) (created by Root) in Provider (created by Root) in Root