Update app.py

app.py

@@ -11,6 +11,7 @@ from transformers import RobertaTokenizer, RobertaModel
 from transformers import AutoModelForSequenceClassification
 from transformers import TFAutoModelForSequenceClassification
 from transformers import AutoTokenizer
+import matplotlib.pyplot as plt
 # from transformers_interpret import SequenceClassificationExplainer
 
 device = "cuda:0" if torch.cuda.is_available() else "cpu"