ErrLookup › unclecode/crawl4ai
unclecode/crawl4ai
🚀🤖 Crawl4AI: Open-source LLM Friendly Web Crawler & Scraper. Don't be shy, join here: https://discord.gg/jP8KfhDhyN · Python · 106 source files
Analyzed at 7e80152142 on 2026-08-14. 182 documented errors.
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| LLMConfig.api_token may not reference an environment… | validation | critical | security, secrets, validation, llm-config, provenance |
| Invalid CSS selector , No elements found for CSS selector | exception | error | css-selector, html-parsing, beautifulsoup, crawl4ai |
| The 'markdown_v2' attribute is deprecated and has been… | exception | error | |
| Rejected request | http | error | http-400, config-validation, sandbox, hooks, security |
| Cannot extract source code for hook | exception | error | hooks, inspect, source-code, crawl4ai |
| Error sanitizing input | exception | error | encoding, sanitization, input-validation, unicode |
| Invalid CSS selector | exception | error | css-selector, error-masking, crawl4ai, chained-exception |
| type must be 'CrawlerRunConfig' or 'BrowserConfig' | validation | warning | fastapi, validation, security, configuration, input-hardening |
| Error evaluating condition | exception | error | http-500, crawl, server-error, memory |
| Setting ' ' is deprecated. | exception | warning | crawl4ai, deprecation, schema-generation, llm-config |
| Unknown strategy | validation | critical | memory, crawler-pool, load-shedding, resource-limits |
| Invalid CSS selector, No elements found for CSS selector | exception | error | css-selector, excluded-tags, crawl4ai, beautifulsoup |
| Unsafe download filename rejected | validation | error | security, path-traversal, downloads, symlink |
| Failed to evaluate wait condition | exception | warning | http-400, config-validation, untrusted-config, hooks |
| enable_stealth cannot be used with browser_mode='builtin'… | validation | warning | ssrf-protection, egress, dns-rebinding, ip-pinning |
| LLM provider not allowed | http | error | llm, authorization, config, api |
| Crawl exceeded the time limit | http | warning | http-504, timeout, crawl-limit, asyncio |
| e.response.text | http | error | mcp, http-proxy, passthrough, api |
| invalid params for hook | validation | error | validation, pydantic, hooks, config |
| CDP endpoint at is not ready after startup | exception | critical | browser-manager, cdp, network, startup |
| Memory usage exceeded threshold for | exception | critical | memory, dispatcher, resource-limits, async |
| Too many concurrent jobs for this caller | http | warning | http-429, rate-limit, quota, server, crawl4ai |
| Database missing columns | exception | error | database, schema-migration, sqlite, upgrade |
| This function must be run in Google Colab environment. | exception | error | environment, colab, virtual-display, crawl4ai |
| HTTP request failed | exception | error | http-crawler, hooks, unexpected-error, network |
| Profile not found | validation | error | browser-profiler, validation, filesystem |
| URL must start with | http | warning | fastapi, validation, security, ssrf, lfi, url |
| Hook ' ' must be a callable function, got | exception | error | hooks, validation, crawl4ai, docker-api |
| Refusing to write download through symlink | validation | error | security, symlink, downloads, filesystem |
| sentence-transformers is required for local embeddings… | exception | error | dependency, embeddings, sentence-transformers, crawl4ai |
| Failed to generate schema | exception | error | crawl4ai, llm, exception-wrapping, schema-generation |
| Browser type not supported | exception | error | browser-manager, validation, browser-type |
| Rejected config | http | error | config, security, provenance, http-400, validation |
| Invalid parameter(s) for | validation | warning | ssrf-protection, egress, dns-rebinding, private-ip |
| result.error_message | http | error | http-500, crawl-failure, error-message, server |
| Task not found | http | warning | http-404, task-status, redis, ttl, polling |
| Failed to start browser | exception | critical | browser-manager, startup, playwright, environment |
| HTTP client error | exception | error | http-client, aiohttp, network, http-crawler |
| str(e) | http | error | http-400, llm-provider, allowlist, validation |
| Server busy, retry later | http | warning | http-503, backpressure, queue, retry-after, server |
| Monitor not initialized | exception | error | initialization, runtime-error, fastapi, monitoring |
| Unsupported import format | validation | warning | ssrf-protection, egress, docker, blocked-hostname |
| Invalid metric: . Must be one of: memory, requests, browsers | http | warning | fastapi, monitoring, validation, query-params |
| unsupported resource_types | validation | error | validation, pydantic, hooks, crawler |
| Server error | exception | error | docker-client, http-status, validation |
| Cannot get terminal attributes | exception | warning | browser-profiler, tty, termios, environment |
| Invalid hook type | validation | error | http-500, streaming, crawler-pool, setup-error |
| Cannot kill permanent browser. Use restart instead. | http | warning | fastapi, browser-pool, permissions, admin-actions |
| Invalid CSS selector | validation | warning | artifacts, quota, disk, configuration |
| error_msg | http | error | http-400, llm-provider, validation, markdown |
| Invalid scanline structure | exception | warning | pdf, image-extraction, data-corruption, decoding |
| Unsupported URL scheme | validation | error | url-validation, scheme, http-crawler, input-validation |
| Invalid window: . Only '5m' is currently supported | http | warning | fastapi, monitoring, validation, query-params |
| markdown_generator must be an instance of… | validation | error | validation, markdown, serialization, configuration |
| Token issuance is disabled: no api_token is configured on… | http | error | fastapi, authentication, configuration, security, token |
| upstream request timed out | http | error | mcp, timeout, network, http-proxy |
| Browser with sig= not found | http | warning | fastapi, browser-pool, not-found, admin-actions |
| Failed to generate schema: no attempts succeeded | exception | error | extraction, schema-generation, llm, retry-exhausted |
| Unsupported browser type | exception | error | browser, playwright, validation, configuration |
| Invalid wait_for parameter | validation | warning | artifacts, not-found, symlink, security |
| Body element is hidden | exception | error | visibility, spa, playwright, rendering |
| Failed to extract HTML content | exception | error | css-selector, extraction, playwright |
| Local file not found | exception | error | local-file, file-url, filesystem, validation |
| Container not found | exception | warning | http-400, deep-crawl, streaming, validation |
| Failed on navigating ACS-GOTO | exception | error | navigation, playwright, network, timeout |
| Timeout downloading PDF from | exception | error | network, timeout, pdf, download, runtime-error |
| [NSTProxy] API Error | exception | error | proxy, api, authentication, nstproxy, quota |
| crawled_data table was not created | exception | critical | database, sqlite, initialization, filesystem |
| Invalid source ' '. Valid sources are | validation | error | validation, url-seeder, input-validation |
| object has no attribute | exception | error | crawl4ai, arun-many, empty-result, crawl-result-container |
| Unsupported export format | validation | warning | ssrf-protection, egress, dns, url-blocked |
| CrawlerRunConfig must be provided | validation | error | deep-crawling, config, api-usage |
| Process HTML, Failed to extract content from the website | exception | error | webcrawler, scraping, html-processing |
| Invalid source(s): . Valid | validation | error | domain-mapper, validation, config |
| Failed to download PDF from | exception | error | network, pdf, download, runtime-error, io |
| Invalid proxy string format | validation | warning | ssrf-protection, egress, redirect, blocked-hostname |
| Wait condition failed | exception | error | wait-for, selector, timeout, spa |
| Authentication failed | exception | error | docker-client, authentication, network |
| The 'fit_markdown' attribute is deprecated and has been… | exception | warning | crawl4ai, deprecation, content-filter, fit-markdown |
| Cannot create new browser contexts when using… | exception | error | browser-manager, persistent-context, configuration |
| Priority queue empty | exception | warning | deep-crawling, priority-queue, frontier-exhausted |
| execute_js endpoint is disabled. Set… | http | warning | execute-js, feature-flag, http-403, security, environment |
| Hooks are disabled. Set CRAWL4AI_HOOKS_ENABLED=true to… | http | warning | hooks, feature-flag, http-403, security, environment |
| msvcrt module not available on this platform | exception | warning | browser-profiler, windows, platform-specific |
| Getting ' ' is deprecated. | exception | warning | deprecation, migration, attribute-error, versioning |
| Unsupported operating system | exception | error | platform, environment, system-info, os-error |
| Timeout after ms waiting for selector | exception | warning | artifacts, not-found, validation, opaque-id |
| Crawl failed | http | error | crawl, network, http-500, playwright |
| Invalid browser type. Must be one of | exception | error | browser, playwright, validation, setup |
| Cannot connect to server | exception | error | docker-client, network, server-unreachable |
| Crawl failed | exception | error | docker-client, crawl-failure, server-error |
| Crawl request failed | http | error | crawl4ai, server, http-500, batch-crawl |
| termios/tty/select modules not available on this platform | exception | warning | browser-profiler, unix, platform-specific |
| Invalid or missing api_token | http | error | fastapi, authentication, security, token, credentials |
| Failed to fetch URL | exception | error | extraction, schema-generation, fetch-failure, network |
| Process HTML, Failed to extract content from the website | exception | error | webcrawler, scraping, wrapper-exception |
| Circular include | exception | error | c4a-script, compile, circular-dependency, includes, validation |
| Failed to compile C4A script | validation | error | c4a-script, compilation, type-error, wrapping |
| Unexpected status code for | http | error | http-status, http-crawler, network |
| Unsupported number of browsers | exception | error | user-agent, validation, configuration, fingerprinting |