FIX: put path in query in quotes

src/caosadvancedtools/crawler.py

@@ -700,8 +700,8 @@ class FileCrawler(Crawler):
 
     @staticmethod
     def query_files(path):
-        query_str = "FIND FILE WHICH IS STORED AT " + (
-            path if path.endswith("/") else path + "/") + "**"
+        query_str = "FIND FILE WHICH IS STORED AT '" + (
+            path if path.endswith("/") else path + "/") + "**'"
         q_info = "Sending the following query: '" + query_str + "'\n"
         files = db.execute_query(query_str)
         logger.info(