fixes

src/internal/app/server/server.go

@@ -3,6 +3,7 @@ package server
 import (
 	"bytes"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"os"
 	"os/signal"
@@ -49,6 +50,7 @@ func NewServer(conf *Config, logger *fluentd.Logger, db *pgxpool.Pool /*, ebCh *
 		ReadTimeout:  time.Millisecond * 50,
 		WriteTimeout: time.Millisecond * 50,
 		IdleTimeout:  time.Millisecond * 50,
+		// Prefork:      true,
 	}
 	s := &Server{
 		fiber.New(cnf),
@@ -122,6 +124,10 @@ func (s *Server) updateKVConfig() error {
 		return err
 	}
 
+	if config == nil {
+		return errors.New("empty KV config data")
+	}
+
 	buf := bytes.NewBuffer(config.Value)
 	decoder := json.NewDecoder(buf)
 	if err := decoder.Decode(&s.conf); err != nil {