Argument of type '"Staff"' is not assignable to parameter of type 'SimplePreconditionKeys | Simpl...

Error when loading 'C:\Users\User\Desktop\Bots and stuff\Gir-Unit V2\src\preconditions\ServerOwner.ts': src/lib/structures/commands/GirCommand.ts:95:26 - error TS2769: No overload matches this call.
  Overload 1 of 2, '(keyOrEntries: SimplePreconditionKeys | SimplePreconditionSingleResolvableDetails | PreconditionContainerArray): PreconditionContainerArray', gave the following error.
    Argument of type '"Trainee"' is not assignable to parameter of type 'SimplePreconditionKeys | SimplePreconditionSingleResolvableDetails | PreconditionContainerArray'.
  Overload 2 of 2, '(entry: PreconditionSingleResolvableDetails<keyof Preconditions>): PreconditionContainerArray', gave the following error.
    Argument of type 'string' is not assignable to parameter of type 'PreconditionSingleResolvableDetails<keyof Preconditions>'.

95         container.append('Trainee');
                            ~~~~~~~~~

src/lib/structures/commands/GirCommand.ts:98:26 - error TS2769: No overload matches this call.
  Overload 1 of 2, '(keyOrEntries: SimplePreconditionKeys | SimplePreconditionSingleResolvableDetails | PreconditionContainerArray): PreconditionContainerArray', gave the following error.
    Argument of type '"Staff"' is not assignable to parameter of type 'SimplePreconditionKeys | SimplePreconditionSingleResolvableDetails | PreconditionContainerArray'.
  Overload 2 of 2, '(entry: PreconditionSingleResolvableDetails<keyof Preconditions>): PreconditionContainerArray', gave the following error.
    Argument of type 'string' is not assignable to parameter of type 'PreconditionSingleResolvableDetails<keyof Preconditions>'.

98         container.append('Staff');

Error when loading 'C:\Users\User\Desktop\Bots and stuff\Gir-Unit V2\src\preconditions\Staff.ts': src/lib/structures/commands/GirCommand.ts:95:26 - error TS2769: No overload matches this call.
  Overload 1 of 2, '(keyOrEntries: SimplePreconditionKeys | SimplePreconditionSingleResolvableDetails | PreconditionContainerArray): PreconditionContainerArray', gave the following error.
    Argument of type '"Trainee"' is not assignable to parameter of type 'SimplePreconditionKeys | SimplePreconditionSingleResolvableDetails | PreconditionContainerArray'.
  Overload 2 of 2, '(entry: PreconditionSingleResolvableDetails<keyof Preconditions>): PreconditionContainerArray', gave the following error.
    Argument of type 'string' is not assignable to parameter of type 'PreconditionSingleResolvableDetails<keyof Preconditions>'.

95         container.append('Trainee');