title: the signs of a broken run
source: manuals/miles-101/sections/1-3-read-your-first-ten-steps.md
lines: 75-80
lang: text
note: Four rows, each with the meaning and the page to go to.
---
| What you see | What it means | Where to go |
|---|---|---|
| no step lines after ten minutes | the engine or the trainer did not start | [section 7.1](#s-troubleshoot-by-symptom) |
| `503 Service Unavailable` lines that do not stop for minutes | the rollout engine died. Short bursts of a minute or less can come from a healthy engine | [section 1.2](#s-add-a-watchdog) |
| the log probability gap grows step after step | the trainer and the engine hold different weights | [section 5.2](#s-check-the-first-step) |
| the reward stays flat and many groups score the same | most groups give no learning signal | [section 3.1](#s-train-math-on-gsm8k) |
