Warning: Failed prop type: checker is not a function

[juancarlosfarah]

Warning: Failed prop type: checker is not a function
    in MediaCard (created by WithStyles(MediaCard))
    in WithStyles(MediaCard) (at SpaceGrid.js:90)
    in div (created by Grid)
    in Grid (created by WithStyles(Grid))
    in WithStyles(Grid) (at SpaceGrid.js:89)
    in div (created by Grid)
    in Grid (created by WithStyles(Grid))
    in WithStyles(Grid) (at SpaceGrid.js:108)
    in SpaceGrid (created by ConnectFunction)
    in ConnectFunction (created by WithStyles(Connect(SpaceGrid)))
    in WithStyles(Connect(SpaceGrid)) (created by Context.Consumer)
    in Route (created by withRouter(WithStyles(Connect(SpaceGrid))))
    in withRouter(WithStyles(Connect(SpaceGrid))) (at Home.js:103)
    in main (at Home.js:97)
    in div (at Home.js:57)
    in Home (created by ConnectFunction)
    in ConnectFunction (created by WithStyles(Connect(Home)))
    in WithStyles(Connect(Home)) (created by Context.Consumer)
    in Route (created by withRouter(WithStyles(Connect(Home))))
    in withRouter(WithStyles(Connect(Home))) (created by Context.Consumer)
    in Route (at App.js:98)
    in Switch (at App.js:97)
    in div (at App.js:96)
    in Router (created by HashRouter)
    in HashRouter (at App.js:95)
    in MuiThemeProviderOld (at App.js:87)
    in App (created by ConnectFunction)
    in ConnectFunction (created by withI18nextTranslation(Connect(App)))
    in withI18nextTranslation(Connect(App)) (at src/index.js:33)
    in I18nextProvider (at src/index.js:32)
    in Provider (at src/index.js:31)