Fixed errors in the files as well as warnings. fix vignette issues and updated the R-CMD-check file

Author: JessUWE

.github/workflows/R-CMD-check.yaml

@@ -36,14 +36,22 @@ jobs:
         uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python }}
-      - name: Install Python ACRO
-        run: python -m pip install acro
       - name: Setup pandoc
         uses: r-lib/actions/setup-pandoc@v2
       - name: Setup R
         uses: r-lib/actions/setup-r@v2
         with:
           r-version: ${{ matrix.r }}
+
+      - name: Install Python ACRO
+        run: python -m pip install acro
+
+      - name: Configure reticulate Python
+        run: |
+          echo "RETICULATE_PYTHON=$(which python)" >> $GITHUB_ENV
+          echo "RETICULATE_PYTHON_ENV=$(which python)" >> $GITHUB_ENV
+        shell: bash
+
       - name: Install R dependencies
         uses: r-lib/actions/setup-r-dependencies@v2
         with:
@@ -53,3 +61,4 @@ jobs:
         uses: r-lib/actions/check-r-package@v2
         with:
           upload-snapshots: true
+          build-vignettes: true