Avoid PHP error if ics calendar cannot be reached

.github/workflows/build-deploy.yml

@@ -50,11 +50,11 @@ jobs:
       contents: write
     needs: build
     steps:
+      - uses: actions/checkout@v4
       - name: fail on fork
           if: github.repository_owner != 'verdigado'
           run: exit 1
 
-      - uses: actions/checkout@v4
       - name: Echo debug
         run: |
           echo "sunflower-${{ github.ref_name }}.zip"

.gitignore

@@ -9,5 +9,5 @@ documentation/
 build/
 assets/vndr/
 .favorites.json
-.vscode/settings.json
+.vscode
 pa11y.json

functions/icalimport.php

@@ -190,8 +190,10 @@ function sunflower_import_icals( $force = false ) {
 			continue;
 		}
 
-		$response        = sunflower_icalimport( $url, $auto_categories );
-		$ids_from_remote = array_merge( $ids_from_remote, $response[0] );
+		$response = sunflower_icalimport( $url, $auto_categories );
+		if ( !empty( $response ) ) {
+			$ids_from_remote = array_merge( $ids_from_remote, $response[0] );
+		}
 	}
 
 	$deleted_on_remote = array_diff( sunflower_get_events_having_uid(), $ids_from_remote );