diff --git a/go.mod b/go.mod
index 3e3cc6fde5d9405caf097d0d113de8a88e748519..d395498736584a2761e22aa8c88e23ea0c0c6819 100644
--- a/go.mod
+++ b/go.mod
@@ -5,7 +5,7 @@ go 1.16
 require (
 	github.com/bwmarrin/snowflake v0.3.0
 	github.com/fsnotify/fsnotify v1.4.9
-	github.com/gin-gonic/gin v1.7.2
+	github.com/gin-gonic/gin v1.7.4
 	github.com/gopherjs/gopherjs v0.0.0-20210901121439-eee08aaf2717
 	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646
 	github.com/sirupsen/logrus v1.8.1
diff --git a/go.sum b/go.sum
index 4a5bc0992147692605a6220c0e5ff8fa9bf8db86..75642a416534a19a50a964d170ef48988ddcf1e2 100644
--- a/go.sum
+++ b/go.sum
@@ -50,6 +50,8 @@ github.com/gin-contrib/sse v0.1.0/go.mod h1:RHrZQHXnP2xjPF+u1gW/2HnVO7nvIa9PG3Gm
 github.com/gin-gonic/gin v1.6.3/go.mod h1:75u5sXoLsGZoRN5Sgbi1eraJ4GU3++wFwWzhwvtwp4M=
 github.com/gin-gonic/gin v1.7.2 h1:Tg03T9yM2xa8j6I3Z3oqLaQRSmKvxPd6g/2HJ6zICFA=
 github.com/gin-gonic/gin v1.7.2/go.mod h1:jD2toBW3GZUr5UMcdrwQA10I7RuaFOl/SGeDjXkfUtY=
+github.com/gin-gonic/gin v1.7.4 h1:QmUZXrvJ9qZ3GfWvQ+2wnW/1ePrTEJqPKMYEU3lD/DM=
+github.com/gin-gonic/gin v1.7.4/go.mod h1:jD2toBW3GZUr5UMcdrwQA10I7RuaFOl/SGeDjXkfUtY=
 github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
diff --git a/recover.go b/recover.go
index 7be6fc63b904e9dac57bab9ab3ad6ef8597010c3..d84c79ab123744422dc76f017c3a7fff1b3a6e2f 100644
--- a/recover.go
+++ b/recover.go
@@ -4,6 +4,7 @@ import (
 	"github.com/gin-gonic/gin"
 	log "github.com/sirupsen/logrus"
 	"net/http"
+	"runtime/debug"
 )
 
 func recovery() gin.HandlerFunc {
@@ -13,8 +14,9 @@ func recovery() gin.HandlerFunc {
 			if p != nil {
 				log.Errorf("Panic occurred in web server, %s", p)
 				context.JSON(http.StatusInternalServerError, gin.H{
-					"error": p,
+					"error": "panic",
 				})
+				log.Error(string(debug.Stack()))
 			}
 		}()
 		context.Next()
diff --git a/store/image.go b/store/image.go
index 22b76b5497ce99a6cb2c66b4afb50de590c026de..ddf5a822a6915f60452ffc829cd93f176108a582 100644
--- a/store/image.go
+++ b/store/image.go
@@ -310,7 +310,7 @@ func (s *Store) ImageUpdate(hash, source, parent, commentary, commentaryTranslat
 		info.Source = source
 		msg += "source"
 	}
-	if parent != "\000" {
+	if parent != "\000" && parent != "" {
 		if p := s.ImageSnowflake(parent); p.Snowflake == parent {
 			s.getLock(p.Hash).Lock()
 			defer s.getLock(p.Hash).Unlock()