Undefined server stylesheet when building

[simcolin]

Describe the bug

CLI crash when trying to build the project
Everything works fine in dev mode (no crash)

Reproduction

git clone https://gitlab.com/scolin/perso
pnpm i
pnpm build

Logs

error during build:
[vite-plugin-sveltekit-compile] ENOENT: no such file or directory, open 'D:\Projects\perso\.svelte-kit\output\server\undefined'
    at Object.readFileSync (node:fs:441:20)
    at file:///D:/Projects/perso/node_modules/.pnpm/@sveltejs+kit@2.17.1_@svelt_8c2e70aba2434a0f4917ef588421b02e/node_modules/@sveltejs/kit/src/exports/vite/build/build_server.js:63:24
    at Array.forEach (<anonymous>)
    at build_server_nodes (file:///D:/Projects/perso/node_modules/.pnpm/@sveltejs+kit@2.17.1_@svelt_8c2e70aba2434a0f4917ef588421b02e/node_modules/@sveltejs/kit/src/exports/vite/build/build_server.js:48:5)
    at Object.handler (file:///D:/Projects/perso/node_modules/.pnpm/@sveltejs+kit@2.17.1_@svelt_8c2e70aba2434a0f4917ef588421b02e/node_modules/@sveltejs/kit/src/exports/vite/index.js:964:5)
    at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
    at async PluginDriver.hookParallel (file:///D:/Projects/perso/node_modules/.pnpm/rollup@4.34.3/node_modules/rollup/dist/es/shared/node-entry.js:21752:17)
    at async file:///D:/Projects/perso/node_modules/.pnpm/rollup@4.34.3/node_modules/rollup/dist/es/shared/node-entry.js:22807:13
    at async catchUnfinishedHookActions (file:///D:/Projects/perso/node_modules/.pnpm/rollup@4.34.3/node_modules/rollup/dist/es/shared/node-entry.js:22182:16)
    at async buildEnvironment (file:///D:/Projects/perso/node_modules/.pnpm/vite@6.1.0_@types+node@22.1_d721ec424cea9f783dbb05b936f8f0f4/node_modules/vite/dist/node/chunks/dep-CfG9u7Cn.js:51354:16)
    at async Object.defaultBuildApp [as buildApp] (file:///D:/Projects/perso/node_modules/.pnpm/vite@6.1.0_@types+node@22.1_d721ec424cea9f783dbb05b936f8f0f4/node_modules/vite/dist/node/chunks/dep-CfG9u7Cn.js:51811:5)
    at async CAC.<anonymous> (file:///D:/Projects/perso/node_modules/.pnpm/vite@6.1.0_@types+node@22.1_d721ec424cea9f783dbb05b936f8f0f4/node_modules/vite/dist/node/cli.js:859:7)
 ELIFECYCLE  Command failed with exit code 1.

System Info

System:
    OS: Windows 11 10.0.26100
    CPU: (16) x64 AMD Ryzen 7 5800X 8-Core Processor
    Memory: 20.99 GB / 31.93 GB
  Binaries:
    Node: 22.12.0 - C:\nvm4w\nodejs\node.EXE
    npm: 11.0.0 - C:\nvm4w\nodejs\npm.CMD
    pnpm: 10.0.0 - C:\nvm4w\nodejs\pnpm.CMD
    bun: 1.2.2 - ~\.bun\bin\bun.EXE
  Browsers:
    Edge: Chromium (131.0.2903.112)
  npmPackages:
    @sveltejs/adapter-cloudflare: ^5.0.2 => 5.0.2
    @sveltejs/kit: ^2.17.1 => 2.17.1
    @sveltejs/vite-plugin-svelte: ^5.0.3 => 5.0.3
    svelte: 5.19.7 => 5.19.7
    vite: ^6.1.0 => 6.1.0

Severity

blocking all usage of SvelteKit

Additional Information

No response

[simcolin]

Just saw that the project would not build at all with repro because no .env
Just add a .env with the following content:

CC_JWT_SECRET=
CC_PASSWORD=
CC_TURSO_DB_URL=
CC_TURSO_DB_TOKEN=

[gterras]

These are variable required in your code, not related to SvelteKit.

[simcolin]

updated main branch to use $env/dynamic/private instead of static, so now .env is no longer required at all to build and see the actual error related to the issue.

[teemingc]

Please provide a minimal reproduction next time, not your entire project. This helps us narrow down the possible causes.