I'm honestly not sure why this doesn't work

I'm good at things

.github/workflows/gradle.yml

@@ -1,24 +1,25 @@
 name: Java CI
-
-on: [push]
-
+on: [push, pull_request]
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
     steps:
     - uses: actions/checkout@v1
     - name: Set up JDK 1.8
       uses: actions/setup-java@v1
       with:
         java-version: 1.8
+    - name: Restore cache
+      uses: actions/cache@v1
+      with:
+        path: ~/.gradle/caches
+        key: ${{ runner.os }}-gradle-${{ hashFiles('build.gradle') }}
     - name: Build with Gradle
       run: ./gradlew build
-    
     - name: Upload artifact
       uses: actions/upload-artifact@v1.0.0
       with:
+        # Artifact name
         name: NaturesAura
         # Directory containing files to upload
         path: build/libs