Are there any errors in the logs?

could you share more details about the error message or logs that the Railway deployment is showing? Also, what tech stack is the project using (e.g., Node.js, Python, Docker)? This will help me better diagnose the problem.

Thanks for the fast responses.
The project is built as a python fsastapi. And workes fine for months now. Also cant replicate the problem locally.

Here is the application link which completely fails to respond even for a health check as soon as published and I added the deployment logs which to me seem fine:
https://presentations-production-afd3.up.railway.app/ (feel free to test for health checks. Publishing should be no problem the endpoints themselves are not callable without authentication)

Here are the Build Logs:
[Region: europe-west4]

╭─────────────────╮

│ Railpack 0.14.0 │

╰─────────────────╯

↳ Detected Python

↳ Using pip

Packages

──────────

python │ 3.11.14 │ previous installed version (3.11)

Steps

──────────

▸ install

$ python -m venv /app/.venv

$ pip install -r requirements.txt

Deploy

──────────

$ uvicorn main:app --host 0.0.0.0 --port ${PORT:-8000}

Successfully prepared Railpack plan for build

context: 6l7r-wLnL

load build definition from railpack-plan.json

0ms

install mise packages: python

1s

mise python@3.11.14 ✓ installed

python -m venv /app/.venv

4s

copy /mise/shims, /mise/installs, /usr/local/bin/mise, /etc/mise/config.toml, /root/.local/state/mise, requirements.txt

4s

pip install -r requirements.txt

34s

Successfully installed MarkupSafe-3.0.3 Pillow-12.0.0 PyYAML-6.0.3 XlsxWriter-3.2.9 aiohappyeyeballs-2.6.1 aiohttp-3.13.2 aiosignal-1.4.0 annotated-doc-0.0.4 annotated-types-0.7.0 anyio-4.11.0 attrs-25.4.0 backoff-2.2.1 cachetools-6.2.2 certifi-2025.11.12 cffi-2.0.0 charset_normalizer-3.4.4 click-8.3.1 cryptography-46.0.3 deprecation-2.1.0 distro-1.9.0 dnspython-2.8.0 email-validator-2.3.0 fastapi-0.122.0 fastapi-cli-0.0.16 fastapi-cloud-cli-0.5.2 fastar-0.8.0 fastuuid-0.14.0 filelock-3.20.0 frozenlist-1.8.0 fsspec-2025.10.0 google-ai-generativelanguage-0.6.15 google-api-core-2.28.1 google-api-python-client-2.187.0 google-auth-2.43.0 google-auth-httplib2-0.2.1 google-generativeai-0.8.5 googleapis-common-protos-1.72.0 grpcio-1.76.0 grpcio-status-1.71.2 h11-0.16.0 h2-4.3.0 hf-xet-1.2.0 hpack-4.1.0 httpcore-1.0.9 httplib2-0.31.0 httptools-0.7.1 httpx-0.28.1 huggingface-hub-1.1.5 hyperframe-6.1.0 idna-3.11 importlib-metadata-8.7.0 itsdangerous-2.2.0 jinja2-3.1.6 jiter-0.12.0 jsonschema-4.25.1 jsonschema-specifications-2025.9.1 langfuse-3.10.1 litellm-1.80.5 lxml-6.0.2 markdown-it-py-4.0.0 mdurl-0.1.2 multidict-6.7.0 openai-2.8.1 opentelemetry-api-1.38.0 opentelemetry-exporter-otlp-proto-common-1.38.0 opentelemetry-exporter-otlp-proto-http-1.38.0 opentelemetry-proto-1.38.0 opentelemetry-sdk-1.38.0 opentelemetry-semantic-conventions-0.59b0 orjson-3.11.4 outcome-1.3.0.post0 packaging-25.0 postgrest-2.24.0 propcache-0.4.1 proto-plus-1.26.1 protobuf-5.29.5 pyasn1-0.6.1 pyasn1-modules-0.4.2 pycparser-2.23 pydantic-2.12.4 pydantic-core-2.41.5 pydantic-extra-types-2.10.6 pydantic-settings-2.12.0 pygments-2.19.2 pyjwt-2.10.1 pyparsing-3.2.5 pysocks-1.7.1 python-dotenv-1.2.1 python-multipart-0.0.20 python-pptx-1.0.2 realtime-2.24.0 referencing-0.37.0 regex-2025.11.3 requests-2.32.5 rich-14.2.0 rich-toolkit-0.16.0 rignore-0.7.6 rpds-py-0.29.0 rsa-4.9.1 selenium-4.38.0 sentry-sdk-2.46.0 shellingham-1.5.4 sniffio-1.3.1 sortedcontainers-2.4.0 starlette-0.50.0 storage3-2.24.0 strenum-0.4.15 stripe-14.0.1 supabase-2.24.0 supabase-auth-2.24.0 supabase-functions-2.24.0 tiktoken-0.12.0 tokenizers-0.22.1 tqdm-4.67.1 trio-0.32.0 trio-websocket-0.12.2 typer-0.20.0 typer-slim-0.20.0 typing-extensions-4.15.0 typing-inspection-0.4.2 ujson-5.11.0 uritemplate-4.2.0 urllib3-2.5.0 uvicorn-0.38.0 uvloop-0.22.1 watchfiles-1.1.1 websocket-client-1.9.0 websockets-15.0.1 wrapt-1.17.3 wsproto-1.3.2 yarl-1.22.0 zipp-3.23.0

copy / /app, /app/.venv, /app

4s

sharing credentials for production-europe-west4-drams3a.railway-registry.com

0ms

Build time: 64.45 seconds

Hey, can you go to your public networking section and check if your target port is also set to 8080?