I try to remove one element from copy of my list

[Stalkert]

max_list_from_all_plates is the main list max_list is the sublist a new list is the copy of the sublist, I try to remove all max from the sublist copy and have an error: list.remove(x): x not in list

if name == «main»:

max_index = 0
max_list_from_all_plates = []

threshold = 0.05

for single_lp in seq:
    maximum_plate_prob = []
    possible_plate_prob = []
    max_list = []
   
    for sign in single_lp:
        high_indexes = []
        for prob_id in range(0,len(sign)):
            if threshold<sign[prob_id]:
                high_indexes.append([sign[prob_id], prob_id, CATEGORIES[prob_id]])
        max_list.append(high_indexes)
    max_list_from_all_plates.append(max_list)
    h = high_indexes[0]

    newlist = max_list
    ma = [max(h) for h in max_list]
    print("max_list", ma)

    #m = [max() for h in newlist]
#print(max_list_from_all_plates)

    for i in newlist:
        x = i[0] 
        m = [max(x) for x in newlist]
        #print(m)
    print(m)
    newlist.remove(m)

 python