Unable to open 'openExamp​​le('auton​omous_cont​rol/Parall​elParkingU​singRRTPla​nnerAndMPC​TrackingCo​ntrollerEx​ample')

i can't open this example openExample('autonomous_control/ParallelParkingUsingRRTPlannerAndMPCTrackingControllerExample')

i have this error (i use matlab 2018b) :

error using exampleUtils.componentExamplesDir (line 13)

Invalid argument "autonomous_control".

Error in findExample (line 18)

componentExamplesDir = exampleUtils.componentExamplesDir(component);

Error in openExample (line 24)

metadata = findExample(id);

[J AI]

could you find a solution to this?