Error 0x88880004

Value: -2004353020 | 0x88880004 | 2290614276

What does it mean ?

LEAP_E_INVALID_POINTER  
A required pointer argument was NULL.
Value: 4 | 0x0004 | 0b0000000000000100

Where does it come from ?

FACILITY_LEAP  
XAudio2 Internal Errors
Value: 2184 | 0x888 | 0b100010001000

Other Errors for FACILITY_LEAP