Error when running 3.2.0 vs. 3.1.0 for ga_instance.best_solutions

[mrh335]

When running version 3.1.0 and prior, the code runs to completion and returns result. When installing 3.2.0, the following error is returned after the ga_instance.run() has completed and the following code is run: solution, solution_fitness, solution_idx = ga_instance.best_solution()

`100%|██████████| 100/100 [01:44<00:00, 1.04s/it]
'numpy.ndarray' object has no attribute 'index'
Traceback (most recent call last):
File "C:\Users\user\AppData\Roaming\Python\Python312\site-packages\pygad\pygad.py", line 1663, in cal_pop_fitness
solution_idx = self.best_solutions.index(list(sol))
^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'numpy.ndarray' object has no attribute 'index'
An exception has occurred, use %tb to see the full traceback.

Traceback (most recent call last):

File ~\AppData\Roaming\Python\Python312\site-packages\pygad\pygad.py:1663 in cal_pop_fitness
solution_idx = self.best_solutions.index(list(sol))

AttributeError: 'numpy.ndarray' object has no attribute 'index'

During handling of the above exception, another exception occurred:

SystemExit: -1`

[Domsall]

I am having the same issue, what was your solution to the problem? @mrh335 @ahmedfgad

For reference, my issue is solved by deleting these lines:

GeneticAlgorithmPython/pygad/pygad.py

Lines 1683 to 1685 in 0e8be9d

	elif (self.save_best_solutions) and (len(self.best_solutions) > 0) and (list(sol) in self.best_solutions):
	solution_idx = self.best_solutions.index(list(sol))
	fitness = self.best_solutions_fitness[solution_idx]

[ahmedfgad]

This is also highlighted in this issue: #293.