Wrangler pages deploy errors but exits without error code (status 0)

[QuentinFarizon]

What versions & operating system are you using?

Ubuntu 24
Tested on Wrangler 4.69.0 and 4.107.0

Please provide a link to a minimal reproduction

Describe the Bug

2026-07-07 09:41:31.791080031 +0200 CEST [postdeploy-7164] [deploy-frontends] Running wrangler pages deploy for project=cozy-up-app-staging branch=<production> dist=app/dist
2026-07-07 09:41:35.231119527 +0200 CEST [postdeploy-7164] ⛅️ wrangler 4.107.0
2026-07-07 09:41:35.231127133 +0200 CEST [postdeploy-7164] ────────────────────
2026-07-07 09:41:40.605646924 +0200 CEST [postdeploy-7164] Uploading... (0/86)
2026-07-07 09:41:41.012759629 +0200 CEST [postdeploy-7164] [deploy-frontends] Wrangler exited with status 0

I've checked my credentials and everything, all is configured on my side. There is no additional output.
Here is the issue is the "Wrangler exited with status 0", making it look like everything was fine, and making CI pipeline pass.

Please provide any relevant error logs

No response

[QuentinFarizon]

I added more logs :

2026-07-07 10:40:10.225405558 +0200 CEST [postdeploy-6684] [deploy-frontends] Running wrangler pages deploy for project=cozy-up-app-staging branch=<production> dist=app/dist wrangler_log=debug skip_caching=true
2026-07-07 10:40:13.278038838 +0200 CEST [postdeploy-6684] ────────────────────
2026-07-07 10:40:13.172178797 +0200 CEST [postdeploy-6684] 🪵  Writing logs to "/app/.config/.wrangler/logs/wrangler-2026-07-07_08-40-12_899.log"
2026-07-07 10:40:13.172907808 +0200 CEST [postdeploy-6684] .env file not found at "/app/.env". Continuing... For more details, refer to https://developers.cloudflare.com/workers/wrangler/system-environment-variables/
2026-07-07 10:40:13.291633077 +0200 CEST [postdeploy-6684] Metrics dispatcher: Posting data {"deviceId":"0de6905d-af80-4710-a217-165eece5695e","event":"wrangler command started","timestamp":1783413613291,"properties":{"amplitude_session_id":1783413613278,"amplitude_event_id":0,"wranglerVersion":"4.107.0","wranglerMajorVersion":4,"wranglerMinorVersion":107,"wranglerPatchVersion":0,"osPlatform":"Linux","osVersion":"#236-Ubuntu SMP Fri Apr 11 19:53:21 UTC 2025","nodeVersion":22,"packageManager":"npm","isFirstUsage":true,"configFileType":"none","isCI":false,"isPagesCI":false,"isWorkersCI":false,"isInteractive":false,"hasAssets":false,"agent":null,"argsUsed":["skipCaching"],"argsCombination":"skipCaching","sanitizedCommand":"pages deploy","sanitizedArgs":{"skipCaching":true},"currentAgentSkillsInstalled":null}}
2026-07-07 10:40:13.173113600 +0200 CEST [postdeploy-6684] .env file not found at "/app/.env.local". Continuing... For more details, refer to https://developers.cloudflare.com/workers/wrangler/system-environment-variables/
2026-07-07 10:40:13.300906756 +0200 CEST [postdeploy-6684] -- START CF API REQUEST: GET https://api.cloudflare.com/client/v4/accounts/e41f764f56bfced06691662cb45fe9e5/pages/projects/cozy-up-app-staging
2026-07-07 10:40:13.301118365 +0200 CEST [postdeploy-6684] QUERY STRING: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:13.301662666 +0200 CEST [postdeploy-6684] HEADERS: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:13.302027057 +0200 CEST [postdeploy-6684] INIT: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:13.302213202 +0200 CEST [postdeploy-6684] -- END CF API REQUEST
2026-07-07 10:40:13.278024752 +0200 CEST [postdeploy-6684] ⛅️ wrangler 4.107.0
2026-07-07 10:40:14.139731082 +0200 CEST [postdeploy-6684] -- START CF API RESPONSE: OK 200
2026-07-07 10:40:14.140232709 +0200 CEST [postdeploy-6684] HEADERS: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:14.140328171 +0200 CEST [postdeploy-6684] RESPONSE: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:14.140328798 +0200 CEST [postdeploy-6684] -- END CF API RESPONSE
2026-07-07 10:40:14.142204474 +0200 CEST [postdeploy-6684] pages deploy: Detecting git repository information...
2026-07-07 10:40:14.208499992 +0200 CEST [postdeploy-6684] QUERY STRING: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:14.208496006 +0200 CEST [postdeploy-6684] -- START CF API REQUEST: GET https://api.cloudflare.com/client/v4/accounts/e41f764f56bfced06691662cb45fe9e5/pages/projects/cozy-up-app-staging
2026-07-07 10:40:14.207247716 +0200 CEST [postdeploy-6684] pages deploy: Not a git repository or git not available: Command failed: git rev-parse --is-inside-work-tree
2026-07-07 10:40:14.208699215 +0200 CEST [postdeploy-6684] HEADERS: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:14.207357713 +0200 CEST [postdeploy-6684] pages deploy: Git information summary - branch: not set, commitHash: not set, commitDirty: not set
2026-07-07 10:40:14.208891586 +0200 CEST [postdeploy-6684] INIT: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:14.208957540 +0200 CEST [postdeploy-6684] -- END CF API REQUEST
2026-07-07 10:40:15.019646812 +0200 CEST [postdeploy-6684] -- START CF API RESPONSE: OK 200
2026-07-07 10:40:15.019877753 +0200 CEST [postdeploy-6684] HEADERS: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:15.021969245 +0200 CEST [postdeploy-6684] -- START CF API REQUEST: GET https://api.cloudflare.com/client/v4/accounts/e41f764f56bfced06691662cb45fe9e5/pages/projects/cozy-up-app-staging/upload-token
2026-07-07 10:40:15.022036681 +0200 CEST [postdeploy-6684] QUERY STRING: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:15.022176820 +0200 CEST [postdeploy-6684] HEADERS: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:15.022272096 +0200 CEST [postdeploy-6684] INIT: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:15.019883686 +0200 CEST [postdeploy-6684] RESPONSE: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:15.019990831 +0200 CEST [postdeploy-6684] -- END CF API RESPONSE
2026-07-07 10:40:15.022443127 +0200 CEST [postdeploy-6684] -- END CF API REQUEST
2026-07-07 10:40:15.804248445 +0200 CEST [postdeploy-6684] -- START CF API RESPONSE: OK 200
2026-07-07 10:40:15.804373945 +0200 CEST [postdeploy-6684] HEADERS: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:15.804376343 +0200 CEST [postdeploy-6684] RESPONSE: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:15.804459152 +0200 CEST [postdeploy-6684] -- END CF API RESPONSE
2026-07-07 10:40:16.018182834 +0200 CEST [postdeploy-6684] -- END CF API REQUEST
2026-07-07 10:40:16.017930863 +0200 CEST [postdeploy-6684] QUERY STRING: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:16.018182046 +0200 CEST [postdeploy-6684] INIT: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:16.018175713 +0200 CEST [postdeploy-6684] HEADERS: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:16.017921469 +0200 CEST [postdeploy-6684] -- START CF API REQUEST: GET https://api.cloudflare.com/client/v4/accounts/e41f764f56bfced06691662cb45fe9e5/pages/projects/cozy-up-app-staging/upload-token
2026-07-07 10:40:16.911608481 +0200 CEST [postdeploy-6684] -- START CF API RESPONSE: OK 200
2026-07-07 10:40:16.911748359 +0200 CEST [postdeploy-6684] HEADERS: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:16.911819133 +0200 CEST [postdeploy-6684] RESPONSE: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:16.912334011 +0200 CEST [postdeploy-6684] Force skipping cache
2026-07-07 10:40:16.999737883 +0200 CEST [postdeploy-6684] -- END CF API REQUEST
2026-07-07 10:40:16.958949585 +0200 CEST [postdeploy-6684] POST /pages/assets/upload
2026-07-07 10:40:16.913030091 +0200 CEST [postdeploy-6684] Uploading... (0/86)
2026-07-07 10:40:16.911820794 +0200 CEST [postdeploy-6684] -- END CF API RESPONSE
2026-07-07 10:40:17.026626728 +0200 CEST [postdeploy-6684] POST /pages/assets/upload
2026-07-07 10:40:16.982168162 +0200 CEST [postdeploy-6684] -- START CF API REQUEST: POST https://api.cloudflare.com/client/v4/pages/assets/upload
2026-07-07 10:40:16.999731705 +0200 CEST [postdeploy-6684] INIT: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:17.105756182 +0200 CEST [postdeploy-6684] HEADERS: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:16.982433343 +0200 CEST [postdeploy-6684] HEADERS: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:16.982172502 +0200 CEST [postdeploy-6684] QUERY STRING: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:17.105686308 +0200 CEST [postdeploy-6684] QUERY STRING: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:17.105676682 +0200 CEST [postdeploy-6684] -- START CF API REQUEST: POST https://api.cloudflare.com/client/v4/pages/assets/upload
2026-07-07 10:40:17.283524753 +0200 CEST [postdeploy-6684] QUERY STRING: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:17.283858304 +0200 CEST [postdeploy-6684] HEADERS: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:17.283520526 +0200 CEST [postdeploy-6684] -- START CF API REQUEST: POST https://api.cloudflare.com/client/v4/pages/assets/upload
2026-07-07 10:40:17.165325576 +0200 CEST [postdeploy-6684] INIT: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:17.165429143 +0200 CEST [postdeploy-6684] -- END CF API REQUEST
2026-07-07 10:40:17.188798021 +0200 CEST [postdeploy-6684] POST /pages/assets/upload
2026-07-07 10:40:17.364394903 +0200 CEST [postdeploy-6684] INIT: omitted; set WRANGLER_LOG_SANITIZE=false to include sanitized data
2026-07-07 10:40:17.364398861 +0200 CEST [postdeploy-6684] -- END CF API REQUEST
2026-07-07 10:40:17.506180238 +0200 CEST [postdeploy-6684] [deploy-frontends] Wrangler exited with status 0
2026-07-07 10:40:31.816859080 +0200 CEST [postdeploy-6684] [deploy-frontends] Wrangler returned success but Cloudflare latest deployment did not change; treating this as a failed Pages deploy.

[QuentinFarizon]

I did not reproduce locally, build uploaded successfully (same build, same variables, same API key)

[QuentinFarizon]

In found the issue : process is killed by OOM (signal 137).

But signals are not caught properly by wrangler CLI wrapper, and are transformed as success.

Proposed fix :

  .on("exit", (code, signal) => {
    if (code !== undefined && code !== null) {
      process.exit(code);
    }

    console.error(`Wrangler child process exited from signal ${signal ?? "unknown"}`);
    process.exit(1);
  })

[QuentinFarizon]

Thanks @matingathani for the fix in progress !

I think there is also an underlying memory issue : When trying to upload a 40MB static build, command wrangler pages deploy is immediately killed with signal 137, OOM (out of memory), on an instance with 512MB RAM, with last log being : Uploading... (0/86).
I do not have the issue on instances with 1GB RAM

OOM was due to running npx wrangler. With wrangler preinstalled, no memory issue