Imported from jeremylongshore/tons-of-skills-marketplace (skills/.curated/apify-common-errors/SKILL.md). Install upstream with npx skills add jeremylongshore/tons-of-skills-marketplace --skill apify-common-errors. Copyright stays with the author (MIT).

Apify Common Errors

Overview

Quick diagnostic reference for the most common Apify errors. Covers Actor run failures, API errors, proxy problems, anti-bot blocks, and platform-specific issues. The full per-error catalog — raw signature, cause, diagnosis, and copy-paste fix for all ten errors — lives in references/error-reference.md; this file is the lean triage path that points you there.

Prerequisites

• An Apify API token exported as APIFY_TOKEN (Console > Settings > Integrations).
• Access to the Apify Console for reading run and build logs.
• curl and jq on PATH for the diagnostic commands below; apify CLI optional for build inspection.

Instructions

Work the failure from signal to fix:

1. Capture the exact error. Grab the Status / StatusMessage from the run, or the ApifyApiError message and HTTP code from the API response. The raw string is the key you match on.
2. Match the signature. Find the matching entry in the table below, then open references/error-reference.md at that number for the cause, diagnosis, and fix.
3. Diagnose before changing code. For run failures, pull the log via the API or Console (see the FAILED entry). For auth/rate/payload errors, the HTTP code already tells you the class — see Error Handling.
4. Apply the fix from the reference, re-run, and confirm with the diagnostic commands.

Error signature → reference

Full detail for every row: references/error-reference.md.

Output

Working through this skill yields:

• The identified error class (matched signature + the one of ten catalog entries).
• The root cause and a copy-paste fix (config change, code edit, or token/proxy action).
• A verification command whose output confirms the run recovered (status SUCCEEDED, valid username, etc.).

Error Handling

Examples

Diagnostic commands for the most common triage steps:

# Check Apify platform status
curl -s https://api.apify.com/v2/health | jq '.'

# Verify your auth (fixes 401 diagnosis)
curl -s -H "Authorization: Bearer $APIFY_TOKEN" \
  https://api.apify.com/v2/users/me | jq '.data.username'

# Check installed package versions
npm list apify-client apify crawlee 2>/dev/null

# Get last run status (find why a run FAILED / TIMED-OUT)
curl -s -H "Authorization: Bearer $APIFY_TOKEN" \
  "https://api.apify.com/v2/acts/USER~ACTOR/runs?limit=1&desc=true" | \
  jq '.data.items[0] | {status, statusMessage, startedAt, finishedAt}'

For the worked fix behind each error — e.g. reading a run log to find a stack trace, batching dataset pushes under 9MB, or switching to residential proxies to clear a 403 — see the matching entry in references/error-reference.md.

Resources

• Apify API Error Codes
• Apify Status Page
• Actor Run Statuses
• Full error catalog (all 10, with fixes)

Next Steps

For comprehensive multi-error debugging across a whole Actor project — log correlation, proxy rotation strategy, and build-cache issues — see the apify-debug-bundle skill in this pack.