STDOUT: 2022-12-01T16:13:41.072171272Z ! Undefined control sequence.
STDOUT: 2022-12-01T16:13:41.072173176Z l.165 i\triangleq
STDOUT: 2022-12-01T16:13:41.072175450Z                  \frac{dq}{dt}
STDOUT: 2022-12-01T16:13:41.072364475Z ?
STDOUT: 2022-12-01T16:13:41.072370386Z ! Emergency stop.
STDOUT: 2022-12-01T16:13:41.072372780Z l.165 i\triangleq
STDOUT: 2022-12-01T16:13:41.072374924Z                  \frac{dq}{dt}
STDOUT: 2022-12-01T16:13:41.072376998Z !  ==> Fatal error occurred, no output PDF file produced!