We do not longer have to call JSON() explicitly

logger.go

@@ -28,11 +28,11 @@ func ErrorLogger() HandlerFunc {
 func ErrorLoggerT(typ ErrorType) HandlerFunc {
 	return func(c *Context) {
 		c.Next()
-
+		// avoid writting if we already wrote into the response body
 		if !c.Writer.Written() {
-			json := c.Errors.ByType(typ).JSON()
-			if json != nil {
-				c.JSON(-1, json)
+			errors := c.Errors.ByType(typ)
+			if len(errors) > 0 {
+				c.JSON(-1, errors)
 			}
 		}
 	}