Update main.yml

.github/workflows/main.yml

@@ -24,6 +24,6 @@ jobs:
           path: .cache
           restore-keys: |
             mkdocs-material-
-      - run: pip install mkdocs-material 
+      - run: pip install mkdocs-material mkdocs-glightbox
       - working-directory: ./docs
         run: mkdocs gh-deploy --force