FIX:没有流水的情况

@@ -1867,6 +1867,8 @@ class EmployeeView(GenericView):
             self.running_log.info('[query Employee] [application_id={0}] ocr_result none'.format(application_id))
             return response.ok(data=False)
         bss_ocr_str = ocr_result_info.bss_ocr
+        if bss_ocr_str is None:
+            return response.ok(data=False)
         bss_ocr = json.loads(bss_ocr_str)
         self.running_log.info('[query Employee] [application_id={0}] [bss_ocr={1}]'.format(application_id, bss_ocr))
         for one_bss in bss_ocr: