skip error

main.go

@@ -64,7 +64,9 @@ func wepb2jpg(path string, md5Path string, writer http.ResponseWriter) {
 
 	resp, getErr := http.Get(path)
 	if getErr != nil {
-		log.Fatal(getErr)
+		log.Print(getErr)
+		writer.WriteHeader(404)
+		return
 	}
 	endTime := time.Now().UnixNano()
 
@@ -108,6 +110,5 @@ func wepb2jpgHandler(writer http.ResponseWriter, request *http.Request) {
 	if hitCache(md5Path, writer) {
 		return
 	}
-
 	wepb2jpg(request.URL.RawQuery, md5Path, writer)
 }