Tags will be empty if teach=false

exa/exa/pipelines.py

@@ -105,6 +105,7 @@ class ExaPipeline(object):
         :param text: Text for searching tags
         :return: json object with tags that are relevant for text
         '''
+        if self.classifier:
             self.classifier.classify(text)
             tags = list()
             for i in self.classifier.tag_accordance: