Fix numpy scalar issue

sonogram.py

@@ -61,7 +61,7 @@ class Sonogram():
             self.groupClassifier = pickle.load(f)
 
     def classifyEmbedding(self,embedding):
-        return int(self.groupClassifier.predict(embedding.reshape(1, -1)))
+        return int(self.groupClassifier.predict(embedding.reshape(1, -1)).item())
     
     def processFile(self,filePath):
         # Loading audio file