| LicenseException | Represents errors that occur during license operations. |
| NotInRoomException | The exception that is thrown when a user is not in a room. |
| RoomException | Represents errors that occur during room operations. |
| UserException | Represents errors that occur during user operations. |
| UserIndexArgumentOutOfRangeException | The exception that is thrown when a user index from a argument is not a valid user. |
| UserIndexOutOfRangeException | The exception that is thrown when a user index is not a valid user. |