Refactored code and added logging

main.go

@@ -13,10 +13,9 @@ import (
 func main() {
 	rand.Seed(time.Now().UTC().UnixNano())
 	logFile, _ := os.OpenFile("logs/errors.log", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
-	defer logFile.Close()
 
 	log.SetOutput(logFile)
 	r := gin.Default()
 	r.POST("callback/message", vk.HandleMessage)
-	r.Run(":80")
+	_ = r.Run(":80")
 }