Update

Update randString function to generate only numeric strings.

Author: TEAMBCS

axis1.go

@@ -408,7 +408,7 @@ var proxies []string
 
 // ---------------- UTILS ----------------
 func randString(n int) string {
-	chars := []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
+	chars := []rune("0123456789")
 	b := make([]rune, n)
 	for i := range b {
 		b[i] = chars[rand.Intn(len(chars))]