1. Index operation failed; the array index evaluated to null.
2. At line:32 char:9
3. +         $dureeNote = $durees[$ligne.DuréeNote]
4. +         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5.     + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
6.     + FullyQualifiedErrorId : NullArrayIndex
7.  
8. Exception calling "Beep" with "2" argument(s): "Positive number required.
9. Parameter name: duration
10. Actual value was 0."
11. At line:35 char:9
12. +         [console]::beep($frequenceNote, $dureeNote)
13. +         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
14.     + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
15.     + FullyQualifiedErrorId : ArgumentOutOfRangeException
16.  
17. Start-Sleep : Cannot validate argument on parameter 'Milliseconds'. The argument is null, empty, or an element of
18. the argument collection contains a null value. Supply a collection that does not contain any null values and then
19. try the command again.
20. At line:39 char:39
21. +             Start-Sleep -Milliseconds $ligne.DuréePause
22. +                                       ~~~~~~~~~~~~~~~~~
23.     + CategoryInfo          : InvalidData: (:) [Start-Sleep], ParameterBindingValidationException
24.     + FullyQualifiedErrorId : ParameterArgumentValidationError,Microsoft.PowerShell.Commands.StartSleepCommand
25.