diff --git a/dist/index.js b/dist/index.js
index e8e286e..5976c83 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -23601,7 +23601,9 @@ async function run() {
       try {
         inputs = JSON.parse(inputsJson);
       } catch (e) {
-        error(`Failed to parse 'inputs' JSON string: ${e instanceof Error ? e.message : String(e)}`);
+        throw new Error(`Failed to parse 'inputs' JSON string: ${e instanceof Error ? e.message : String(e)}`, {
+          cause: e
+        });
       }
     }
     const octokit = getOctokit(token);
diff --git a/src/main.ts b/src/main.ts
index 36f4f46..6bf1095 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -40,7 +40,9 @@ async function run(): Promise<void> {
       try {
         inputs = JSON.parse(inputsJson)
       } catch (e) {
-        core.error(`Failed to parse 'inputs' JSON string: ${e instanceof Error ? e.message : String(e)}`)
+        throw new Error(`Failed to parse 'inputs' JSON string: ${e instanceof Error ? e.message : String(e)}`, {
+          cause: e,
+        })
       }
     }