popt, pcov = optimize.curve_fit(get_all_SEIR, init_SEIR_num, infectious, bounds=([-1,0,0,0,0,1],[1,0.5,0.5,0.5,0.5,5]),maxfev=500000)Traceback (most recent call last): File "", line 1, in File "C:\Users\chencan\AppData\Local\Programs\Python\Python37\lib\site-packages\scipy\optimize\minpack.py", line 775, in curve_fit **kwargs) File "C:\Users\chencan\AppData\Local\Programs\Python\Python37\lib\site-packages\scipy\optimize_lsq\least_squares.py", line 814, in least_squares raise ValueError("Residuals are not finite in the initial point.")ValueError: Residuals are not finite in the initial point.