also try this config

next.config.js

@@ -1,16 +1,23 @@
 // next.config.js
+const webpack = require('webpack')
 const withBundleAnalyzer = require('@next/bundle-analyzer')({
   enabled: process.env.ANALYZE === 'true'
 })
 
+const envMap = Object.keys(process.env)
+  .filter(key => key.startsWith('CERC_'))
+  .reduce((acc, key) => {
+    acc[`process.env.${key}`] = JSON.stringify(process.env[key])
+    return acc
+  }, {})
+
 const nextConfig = {
   reactStrictMode: false,
   swcMinify: true,
   webpack: (config) => {
-    // Let the build script inject the DefinePlugin
+    config.plugins.push(new webpack.DefinePlugin(envMap))
     return config
   }
 }
 
-// Export directly - let the build script handle the transformation
 module.exports = withBundleAnalyzer(nextConfig)