Added exception handling for 500 error messages.

app/errors.py

@@ -1,4 +1,4 @@
-from flask import jsonify
+from flask import (jsonify, current_app)
 
 from app.main import main
 
@@ -32,5 +32,5 @@ def limit_exceeded(e):
 
 @main.app_errorhandler(500)
 def internal_server_error(e):
-    # TODO: log the error
+	current_app.logger.exception(e)
     return jsonify(error="Internal error"), 500