TypeError: 'NoneType' object is not iterable python3

Question

this is the class i use inside my python file :

class SatelliteList(MenuList):

def __init__(self):
    MenuList.__init__(self, list=[], enableWrapAround=True, content=eListboxPythonMultiContent)
    if FHD_Res:
        self.l.setItemHeight(40)
        self.l.setFont(0, gFont('Regular', 27))
    else:
        self.l.setItemHeight(24)
        self.l.setFont(0, gFont('Regular', 20))

def setEntries(self, satelliteslist):
    res = []
    for x in satelliteslist:
        satparameter = x[0]
        satentry = []
        pos = int(satparameter.get('position'))
        if pos < 0:
            pos += 3600
        satentry.append(pos)
        color = None
        color_sel = None
        if satparameter.get('selected', False):
            color = 0
            color_sel = 65344
        backcolor = None
        backcolor_sel = None
        a = FHD_Res and 1050 or HD_Res and 700 or 430
        b = FHD_Res and 255 or HD_Res and 170 or 103
        if len(x) == 1:
            backcolor = 1644912
            backcolor_sel = 9466996
        if FHD_Res:
            satentry.append(MultiContentEntryText(pos=(0, 0), size=(a, 40), font=0, flags=RT_HALIGN_LEFT | RT_VALIGN_TOP, text=satparameter.get('name'), color=color, color_sel=color_sel, backcolor=backcolor, backcolor_sel=backcolor_sel, border_width=1, border_color=15792383))
        else:
            satentry.append(MultiContentEntryText(pos=(0, 0), size=(a, 24), font=0, flags=RT_HALIGN_LEFT | RT_VALIGN_TOP, text=satparameter.get('name'), color=color, color_sel=color_sel, backcolor=backcolor, backcolor_sel=backcolor_sel, border_width=1, border_color=15792383))
        pos = int(satparameter.get('position'))
        posStr = str(abs(pos) / 10) + '.' + str(abs(pos) % 10)
        if pos < 0:
            posStr = posStr + ' ' + 'West'
        if pos > 0:
            posStr = posStr + ' ' + 'East'
        if pos == 0:
            posStr = posStr + ' ' + 'Greenwich'
        if FHD_Res:
            satentry.append(MultiContentEntryText(pos=(a, 0), size=(b, 40), font=0, flags=RT_HALIGN_CENTER | RT_VALIGN_TOP, text=posStr, color=color, color_sel=color_sel, backcolor=backcolor, backcolor_sel=backcolor_sel, border_width=1, border_color=15792383))
        else:
            satentry.append(MultiContentEntryText(pos=(a, 0), size=(b, 24), font=0, flags=RT_HALIGN_CENTER | RT_VALIGN_TOP, text=posStr, color=color, color_sel=color_sel, backcolor=backcolor, backcolor_sel=backcolor_sel, border_width=1, border_color=15792383))
        res.append(satentry)

after running i got the following error:

Traceback (most recent call last):

line 905, in setEntries

for x in satelliteslist:

TypeError: 'NoneType' object is not iterable

how can i fix that?