Chef and Numbers Problem-Runtime Error

1

hi , i am write solution of this problem in python which is work with out err in my system but i am submit the solution it gives me runtime error but it’s not display whats error how can i figerout the problem
my code

cook your dish here

def getDishArr():

t = int(input())    

disharr = []

for i in range(t):        

    N = int(input())

    b = input().split(' ')

    disharr.append( max_pickUp([[int(x) for x in b]]) )

    

return disharr

def max_pickUp(d):

i = 0

final_result = []

def find_posible_pickup(elemnt=None,arr=None,pos=0,lastpos=None):  

    postion = arr.index(elemnt,pos)

    if lastpos == None:

        lastpos = postion    

    try:

        if postion != lastpos + 1:

            allPos.append(postion)                       

        find_posible_pickup(elemnt,arr,postion + 1,lastpos)

    except Exception:           

        lastpos = None

                

while i < len(d):

    dish_rows = d[i]

    type_of_dish = []                

    key = []

    val = []

    

    if len(dish_rows) > 1:

        

        for x in dish_rows:

            if x not in type_of_dish:

                type_of_dish.append(x)

        for j in type_of_dish:

            allPos = []

            find_posible_pickup(j,dish_rows)

            #final_result.append([j,len(allPos)])

            key.append(j)

            val.append(len(allPos)) 

    i+=1

    

    final_result.append( key[ val.index( max( val ) ) ] ) 



return final_result[0]

print(getDishArr())