diff --git a/.gitignore b/.gitignore
index 9750d07..13bfe6f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -44,3 +44,7 @@ mongo-volume-backup-*.tar.gz
 
 # backups directory for mongo-volume tarballs
 /backups/
+
+# Serena AI assistant
+.serena/
+*.serena-memory
diff --git a/.mcp.json b/.mcp.json
new file mode 100644
index 0000000..ad2686c
--- /dev/null
+++ b/.mcp.json
@@ -0,0 +1,28 @@
+{
+  "mcpServers": {
+    "serena": {
+      "command": "uvx",
+      "args": [
+        "--from",
+        "git+https://github.com/oraios/serena",
+        "serena",
+        "start-mcp-server",
+        "--enable-web-dashboard",
+        "false"
+      ]
+    },
+    "context7": {
+      "type": "http",
+      "url": "https://mcp.context7.com/mcp"
+    },
+    "git": {
+      "command": "uvx",
+      "args": [
+        "mcp-server-git"
+      ],
+      "env": {
+        "MCP_GIT_ALLOW": "/home/knee-cola/web-pro/evidencija-rezija"
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/app/lib/actions/billActions.ts b/app/lib/actions/billActions.ts
index 89a22fb..3a5de12 100644
--- a/app/lib/actions/billActions.ts
+++ b/app/lib/actions/billActions.ts
@@ -86,7 +86,7 @@ const serializeAttachment = async (billAttachment: File | null) => {
         lastModified: fileLastModified,
     } = billAttachment;
 
-    if(!fileName || fileName === 'undefined') {
+    if(!fileName || fileName === 'undefined' || fileSize === 0) {
         return null;
     }