Add Error for e2e test

scripts/e2e.ts

@@ -5,6 +5,11 @@ import * as request from "request-promise";
 async function e2e(filePath: string): Promise<void> {
     console.log(`Running e2e for: ${filePath}`);
 
+    if (!fs.existsSync(filePath)) {
+        console.error("File not found");
+        throw Error("File not found");
+    }
+
     const result = await request.post({
         url: "https://wt-9017166451e5dc00461b648d19f5e8da-0.sandbox.auth0-extend.com/docx-validator",
         formData: {
@@ -21,4 +26,5 @@ e2e(process.argv[2])
     })
     .catch(() => {
         console.log("Error! Validation failed");
+        process.exit(1);
     });