Fix: Force svg-captcha external via webpack config

next.config.mjs

@@ -1,8 +1,13 @@
 /** @type {import('next').NextConfig} */
 const nextConfig = {
     output: 'standalone',
-    // This prevents Webpack from bundling svg-captcha and breaking its font paths
+    webpack: (config, { isServer }) => {
-    serverExternalPackages: ['svg-captcha'],
+        // Force Webpack to leave svg-captcha completely alone on the server
+        if (isServer) {
+            config.externals.push('svg-captcha');
+        }
+        return config;
+    },
 };
 
 export default nextConfig;