update check base64

utils/util.go

@@ -116,12 +116,18 @@ func IsBase64ImageStr(imageStr string) (bool, []byte, string, string) {
 	if len(dataSuffix) < 2 {
 		return false, nil, "", ""
 	}
+	log.Info("dataSuffix:", dataSuffix)
 	formatStrArr := strings.Split(dataSuffix[0], ":")
 	if len(formatStrArr) < 2 {
 		return false, nil, "", ""
 	}
 	formatStr := formatStrArr[1]
-	suffix := strings.Split(formatStr, "/")[1]
+	log.Info("formatStr:", formatStr)
+	suffixArr := strings.Split(formatStr, "/")
+	if len(suffixArr) < 2 {
+		return false, nil, "", ""
+	}
+	suffix := suffixArr[1]
 	return true, decodeBytes, formatStr, suffix
 }