❌ Attempted to access a server-side environment variable on the client get's thrown in db.ts

import { createEnv } from "@t3-oss/env-nextjs";
import { z } from "zod";

export const env = createEnv({
  server: {
    DATABASE_URL: z
      .string()
      .url()
      .refine(
        (str) => !str.includes("YOUR_MYSQL_URL_HERE"),
        "You forgot to change the default URL"
      ),
    NODE_ENV: z
      .enum(["development", "test", "production"])
      .default("development"),
    NEXTAUTH_SECRET: z.string().min(1),
    NEXTAUTH_URL: z.preprocess(
      (str) => process.env.VERCEL_URL ?? str,
      process.env.VERCEL ? z.string().min(1) : z.string().url()
    ),
  },
  client: {},
  runtimeEnv: {
    DATABASE_URL: process.env.DATABASE_URL,
    NODE_ENV: process.env.NODE_ENV,
    NEXTAUTH_SECRET: process.env.NEXTAUTH_SECRET,
    NEXTAUTH_URL: process.env.NEXTAUTH_URL,
  },
  skipValidation: !!process.env.SKIP_ENV_VALIDATION,
});