fixed load_learner

app.py

@@ -15,7 +15,7 @@ import sys
 from fastai import *
 from fastai.vision import *
 from fastai.metrics import error_rate
-from fastai.basic_train import load_learner
+from fastai.learner import load_learner
 from werkzeug.utils import secure_filename
 import pandas as pd
 from itertools import zip_longest