The npm install command failed in my project. Analyze the following er

src/auth.config.ts

@@ -0,0 +1,66 @@
+
+import type { NextAuthConfig } from 'next-auth';
+import Credentials from 'next-auth/providers/credentials';
+import { z } from 'zod';
+import db from '@/lib/db';
+import { BetterSqlite3Adapter } from "next-auth/adapters"
+
+export const authConfig = {
+  pages: {
+    signIn: '/login',
+  },
+  adapter: BetterSqlite3Adapter(db),
+  session: {
+    strategy: 'database',
+  },
+  providers: [
+    Credentials({
+      async authorize(credentials) {
+        const parsedCredentials = z
+          .object({ email: z.string().email(), password: z.string().min(1) })
+          .safeParse(credentials);
+
+        if (parsedCredentials.success) {
+          const { email, password } = parsedCredentials.data;
+          
+          try {
+            const userStmt = db.prepare('SELECT * FROM users WHERE email = ?');
+            const user = userStmt.get(email) as any;
+
+            if (!user) return null;
+            
+            // WARNING: Storing passwords in plaintext is insecure.
+            // This is for demonstration purposes only.
+            // In a real application, you MUST hash and salt passwords.
+            const passwordsMatch = password === user.password;
+
+            if (passwordsMatch) return user;
+          } catch (e) {
+            console.error(e)
+            return null
+          }
+        }
+
+        return null;
+      },
+    }),
+  ],
+  callbacks: {
+    authorized({ auth, request: { nextUrl } }) {
+      const isLoggedIn = !!auth?.user;
+      const isOnAdmin = nextUrl.pathname.startsWith('/admin');
+      
+      if (isOnAdmin) {
+        return isLoggedIn;
+      } else if (isLoggedIn) {
+        // Redirect logged-in users from the login page to the admin dashboard
+        if (nextUrl.pathname === '/login') {
+            return Response.redirect(new URL('/admin', nextUrl));
+        }
+        return true;
+      }
+      
+      return true;
+    },
+  },
+} satisfies NextAuthConfig;