diff --git a/collector.go b/collector.go
index 196eb28..0f0e105 100644
--- a/collector.go
+++ b/collector.go
@@ -75,11 +75,13 @@ func (c *Collector) collect(id string) {
 
 		in.Id = id
 		in.Name = grpc.Crawlers(grpc.Crawlers_value[conf.Crawler.Name])
+
 		out, err := dc.Get(context.Background(), in)
 		if err != nil {
-			log.Printf("Cannot collect [ID: %s] [Crawler : %s] - [Err : %s]\n", conf.Id, conf.Crawler.Name, err)
+			log.Printf("Cannot collect [ID: %s] [Crawler : %s] - [Err : %s]\n", conf.Id, conf.Crawler.Name, err.Error())
+			return
 		}
-		log.Printf("COLLECTED. [ID: %s] [Crawler : %s] [Result : %s]\n",  conf.Id, conf.Crawler.Name, out.GetData() )
+		log.Printf("COLLECTED. [ID: %s] [Crawler : %s] [Result : %s]\n", conf.Id, conf.Crawler.Name, out.GetData())
 		c.dataCh <- out
 	}()
 }