# errors URL: /api/rendering/errors/ Section: rendering -------------------------------------------------------------------------------- errors - Bengal window.BENGAL_THEME_DEFAULTS = { appearance: 'dark', palette: 'snow-lynx' }; // Progressive Enhancement System Configuration window.Bengal = window.Bengal || {}; window.Bengal.enhanceBaseUrl = '/bengal/assets/js/enhancements'; window.Bengal.watchDom = true; window.Bengal.debug = false; (function () { try { var defaults = window.BENGAL_THEME_DEFAULTS || { appearance: 'system', palette: '' }; var defaultAppearance = defaults.appearance; if (defaultAppearance === 'system') { defaultAppearance = (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) ? 'dark' : 'light'; } var storedTheme = localStorage.getItem('bengal-theme'); var storedPalette = localStorage.getItem('bengal-palette'); var theme = storedTheme ? (storedTheme === 'system' ? defaultAppearance : storedTheme) : defaultAppearance; var palette = storedPalette ?? defaults.palette; document.documentElement.setAttribute('data-theme', theme); if (palette) { document.documentElement.setAttribute('data-palette', palette); } } catch (e) { document.documentElement.setAttribute('data-theme', 'light'); } })(); Skip to main content Magnifying Glass ESC Recent Clear Magnifying Glass No results for "" Try different keywords or check your spelling Start typing to search... ↑↓ Navigate ↵ Open ESC Close Powered by Lunr ᓚᘏᗢ Documentation Info About Arrow Clockwise Get Started Note Tutorials File Text Content Palette Theming Settings Building Starburst Extending Bookmark Reference Learning Tracks Releases Dev GitHub API Reference bengal CLI Magnifying Glass Search ⌘K Palette Appearance Chevron Down Mode Monitor System Sun Light Moon Dark Palette Snow Lynx Brown Bengal Silver Bengal Charcoal Bengal Blue Bengal List ᓚᘏᗢ Magnifying Glass Search X Close Documentation Info About Arrow Clockwise Get Started Note Tutorials File Text Content Palette Theming Settings Building Starburst Extending Bookmark Reference Learning Tracks Releases Dev GitHub API Reference bengal CLI Palette Appearance Chevron Down Mode Monitor System Sun Light Moon Dark Palette Snow Lynx Brown Bengal Silver Bengal Charcoal Bengal Blue Bengal API Reference __main__ bengal Caret Right Folder Analysis community_detection graph_analysis graph_reporting graph_visualizer knowledge_graph link_suggestions link_types page_rank path_analysis performance_advisor results Caret Right Folder Assets manifest pipeline Caret Right Folder Autodoc base config docstring_parser utils virtual_orchestrator Caret Right Folder Extractors cli openapi python Caret Right Folder Models cli common openapi python Caret Right Folder Cache asset_dependency_map cache_store cacheable compression dependency_tracker page_discovery_cache query_index query_index_registry taxonomy_index utils Caret Right Folder Build Cache autodoc_tracking core file_tracking fingerprint parsed_content_cache rendered_output_cache taxonomy_index_mixin validation_cache Caret Right Folder Indexes author_index category_index date_range_index section_index Caret Right Folder Cli __main__ base site_templates utils Caret Right Folder Commands assets build clean collections config debug explain fix health init perf project serve site skeleton sources theme utils validate Caret Right Folder Graph __main__ bridges communities orphans pagerank report suggest Caret Right Folder New config presets scaffolds site wizard Caret Right Folder Helpers cli_app_loader cli_output config_validation error_handling menu_config metadata progress site_loader traceback validation Caret Right Folder Skeleton hydrator schema Caret Right Folder Templates base registry Caret Right Folder Blog template Caret Right Folder Changelog template Caret Right Folder Default template Caret Right Folder Docs template Caret Right Folder Landing template Caret Right Folder Portfolio template Caret Right Folder Resume template Caret Right Folder Collections errors loader schemas validator Caret Right Folder Config defaults deprecation directory_loader env_overrides environment feature_mappings hash loader merge origin_tracker validators Caret Right Folder Content Layer entry loaders manager source Caret Right Folder Sources github local notion rest Caret Right Folder Content Types base registry strategies Caret Right Folder Core build_context cascade_engine menu section theme Caret Right Folder Asset asset_core css_transforms Caret Right Folder Page computed content metadata navigation operations page_core proxy relationships utils Caret Right Folder Site core data discovery factories page_caches properties section_registry theme Caret Right Folder Debug base config_inspector content_migrator delta_analyzer dependency_visualizer explainer incremental_debugger models reporter shortcode_sandbox Caret Right Folder Discovery asset_discovery content_discovery Caret Right Folder Fonts downloader generator Caret Right Folder Health autofix base health_check report Caret Right Folder Linkcheck async_checker ignore_policy internal_checker models orchestrator Caret Right Folder Validators anchors assets cache config connectivity cross_ref fonts links menu navigation output performance rendering rss sitemap taxonomy tracks Caret Right Folder Directives analysis checkers constants Caret Right Folder Orchestration asset content full_to_incremental incremental menu postprocess related_posts render section static streaming taxonomy Caret Right Folder Postprocess html_output redirects rss sitemap special_pages Caret Right Folder Output Formats index_generator json_generator llm_generator lunr_index_generator txt_generator utils Caret Right Folder Rendering api_doc_enhancer asset_extractor errors jinja_utils link_transformer link_validator pygments_cache renderer template_context template_profiler validator Caret Right Folder Parsers base factory mistune native_html pygments_patch python_markdown Caret Right Folder Pipeline core output thread_local toc transforms Caret Right Folder Plugins badges cross_references inline_icon term variable_substitution Caret Right Folder Directives _icons admonitions badge base button cache cards checklist code_tabs container contracts data_table dropdown embed errors example_label fenced figure glossary icon include list_table literalinclude marimo navigation options rubric steps tabs target term terminal tokens utils validator video Caret Right Folder Template Engine asset_url core environment manifest menu url_helpers Caret Right Folder Template Functions advanced_collections advanced_strings autodoc collections content crossref data dates debug files get_page i18n icons images math_functions navigation pagination_helpers seo strings tables taxonomies theme urls Caret Right Folder Server build_handler component_preview constants dev_server live_reload pid_manager reload_controller request_handler request_logger resource_manager utils Caret Right Folder Services validation Caret Right Folder Themes config Caret Right Folder Utils atomic_write autodoc build_context build_stats build_summary cli_output css_minifier dates dotdict error_handlers file_io file_lock hashing incremental_constants js_bundler live_progress logger metadata observability page_initializer pagination path_resolver paths performance_collector performance_report profile progress retry rich_console sections swizzle text theme_registry theme_resolution thread_local traceback_config traceback_renderer url_normalization url_strategy API Reference Rendering ᗢ Caret Down Link Copy URL External Open LLM text Copy Copy LLM text Share with AI Ask Claude Ask ChatGPT Ask Gemini Ask Copilot Module rendering.errors Rich template error objects with line numbers, context, and suggestions. View source 3 Classes 7 Functions Classes TemplateErrorContext dataclass Context around an error in a template. 0 Caret Right Context around an error in a template. Attributes Name Type Description template_name str line_number int | None column int | None source_line str | None surrounding_lines list[tuple[int, str]] template_path Path | None InclusionChain dataclass Represents the template inclusion chain. 1 Caret Right Represents the template inclusion chain. Attributes Name Type Description entries list[tuple[str, int | None]] Internal Methods 1 Caret Right __str__ Format as readable chain. 0 str Caret Right def __str__(self) -> str Format as readable chain. Returns str TemplateRenderError dataclass Rich template error with all debugging information. This replaces the simple string error messages… 6 Caret Right Rich template error with all debugging information. This replaces the simple string error messages with structured data that can be displayed beautifully and used for IDE integration. Attributes Name Type Description error_type str message str template_context TemplateErrorContext inclusion_chain InclusionChain | None page_source Path | None suggestion str | None available_alternatives list[str] search_paths list[Path] | None Methods 1 from_jinja2_error classmethod Extract rich error information from Jinja2 exception. 4 TemplateRenderError Caret Right def from_jinja2_error(cls, error: Exception, template_name: str, page_source: Path | None, template_engine: Any) -> TemplateRenderError Extract rich error information from Jinja2 exception. Parameters 4 error Exception Jinja2 exception template_name str Template being rendered page_source Path | None Source content file (if applicable) template_engine Any Template engine instance Returns TemplateRenderError — Rich error object Internal Methods 5 Caret Right _classify_error staticmethod Classify Jinja2 error type. 1 str Caret Right def _classify_error(error: Exception) -> str Classify Jinja2 error type. Parameters 1 error Exception Returns str _extract_context staticmethod Extract template context from error. 3 TemplateErrorContext Caret Right def _extract_context(error: Exception, template_name: str, template_engine: Any) -> TemplateErrorContext Extract template context from error. Parameters 3 error Exception template_name str template_engine Any Returns TemplateErrorContext _build_inclusion_chain staticmethod Build template inclusion chain from traceback. 2 InclusionChain | None Caret Right def _build_inclusion_chain(error: Exception, template_engine: Any) -> InclusionChain | None Build template inclusion chain from traceback. Parameters 2 error Exception template_engine Any Returns InclusionChain | None _generate_suggestion staticmethod Generate helpful suggestion based on error. 3 str | None Caret Right def _generate_suggestion(error: Exception, error_type: str, template_engine: Any) -> str | None Generate helpful suggestion based on error. Parameters 3 error Exception error_type str template_engine Any Returns str | None _find_alternatives staticmethod Find alternative filters/variables that might work. 3 list[str] Caret Right def _find_alternatives(error: Exception, error_type: str, template_engine: Any) -> list[str] Find alternative filters/variables that might work. Parameters 3 error Exception error_type str template_engine Any Returns list[str] Functions display_template_error Display a rich template error in the terminal. 2 None Caret Right def display_template_error(error: TemplateRenderError, use_color: bool = True) -> None Display a rich template error in the terminal. Parameters 2 Name Type Default Description error TemplateRenderError — Rich error object use_color bool True Whether to use terminal colors _display_template_error_rich Display template error with rich formatting. 1 None Caret Right def _display_template_error_rich(error: TemplateRenderError) -> None Display template error with rich formatting. Parameters 1 Name Type Default Description error TemplateRenderError — _generate_enhanced_suggestions Generate context-aware suggestions for template errors. 1 list[str] Caret Right def _generate_enhanced_suggestions(error: TemplateRenderError) -> list[str] Generate context-aware suggestions for template errors. Parameters 1 Name Type Default Description error TemplateRenderError — Returns list[str] _extract_variable_name Extract variable name from undefined variable error. 1 str | None Caret Right def _extract_variable_name(error_message: str) -> str | None Extract variable name from undefined variable error. Parameters 1 Name Type Default Description error_message str — Returns str | None _extract_filter_name Extract filter name from filter error. 1 str | None Caret Right def _extract_filter_name(error_message: str) -> str | None Extract filter name from filter error. Parameters 1 Name Type Default Description error_message str — Returns str | None _extract_dict_attribute Extract attribute name from dict access error. 1 str | None Caret Right def _extract_dict_attribute(error_message: str) -> str | None Extract attribute name from dict access error. Parameters 1 Name Type Default Description error_message str — Returns str | None _display_template_error_click Fallback display using click (original implementation). 2 None Caret Right def _display_template_error_click(error: TemplateRenderError, use_color: bool = True) -> None Fallback display using click (original implementation). Parameters 2 Name Type Default Description error TemplateRenderError — use_color bool True ← Previous asset_extractor Next → jinja_utils List © 2025 Bengal ᓚᘏᗢ window.BENGAL_LAZY_ASSETS = { tabulator: '/bengal/assets/js/tabulator.min.js', dataTable: '/bengal/assets/js/data-table.js', mermaidToolbar: '/bengal/assets/js/mermaid-toolbar.9de5abba.js', mermaidTheme: '/bengal/assets/js/mermaid-theme.344822c5.js', graphMinimap: '/bengal/assets/js/graph-minimap.cc7e42e3.js', graphContextual: '/bengal/assets/js/graph-contextual.440e59c6.js' }; window.BENGAL_ICONS = { close: '/bengal/assets/icons/close.911d4fe1.svg', enlarge: '/bengal/assets/icons/enlarge.652035e5.svg', copy: '/bengal/assets/icons/copy.3d56e945.svg', 'download-svg': '/bengal/assets/icons/download.04f07e1b.svg', 'download-png': '/bengal/assets/icons/image.c34dfd40.svg', 'zoom-in': '/bengal/assets/icons/zoom-in.237b4a83.svg', 'zoom-out': '/bengal/assets/icons/zoom-out.38857c77.svg', reset: '/bengal/assets/icons/reset.d26dba29.svg' }; Arrow Up X -------------------------------------------------------------------------------- Metadata: - Author: lbliii - Word Count: 1628 - Reading Time: 8 minutes