FIR filter using hamming window

[lulyluly]

hi;

filtering the data using hamming window : f) (bandpass 0.1- 40 ) and filter order 826 (hP) 166 (LP) :
error message " NAN values cannot be converted to logical"

It works if one value is entered and not if two values are entered."

whats the recommended value to 0.1- 40 banpass