Fix version string when building with github actions

.github/workflows/deploy-pages.yml

@@ -15,6 +15,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v3
+        with:
+          fetch-depth: 0 # Needed for tags
       - uses: actions/setup-node@v3
         with:
           node-version: 18

vite.config.ts

@@ -9,9 +9,11 @@ var version;
 
 try {
   var gitInfo = gitDescribeSync();
-  version = `${gitInfo.tag}`;
-  if (gitInfo.distance)
-    version += `-${gitInfo.distance}+${gitInfo.hash}`
+  if(gitInfo.tag) {
+    version = `${gitInfo.tag}`;
+    if (gitInfo.distance)
+      version += `-${gitInfo.distance}+${gitInfo.hash}`
+  }
 } catch { }
 
 // https://vitejs.dev/config/