langchain-ai/langchain
Documented errors, page 2 of 4. Back to langchain-ai/langchain
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| Runnable has no last node | exception | error | runnable, runnable-parallel, graph, get-graph |
| {error_message} | exception | error | environment, secrets, configuration |
| Missing keys in config['configurable'] Expected keys are… | exception | error | runnable, message-history, config, session-id, valueerror |
| unsupported operand type(s) for + | exception | error | streaming, astream-log, type-error, python |
| Either data or path must be provided | validation | error | blob, documents, validation, pydantic |
| Expected Serializable, got | exception | error | serialization, dump, type-error |
| add_message is not implemented for this class. Please… | exception | error | chat-history, interface, not-implemented |
| Function contains a mix of Pydantic v1 and v2 annotations… | exception | error | tool, pydantic, pydantic-v1-migration, annotations |
| Unknown value types: . Only dict and int values are… | exception | error | usage, token-counting, type-mismatch |
| only supports sync methods. | exception | error | runnable, runnable-generator, sync-async-mismatch, streaming, asyncio |
| unclosed tag at line | exception | error | mustache, prompt-template, parsing |
| Expected exactly one result, but got | exception | error | openai-functions, output-parsing, configuration |
| y should be >= 0 and < number of lines | exception | error | graph, ascii-rendering, coordinates, valueerror |
| cleanup should be one of 'incremental', 'full'… | exception | error | indexing, cleanup, validation |
| Received disallowed comparator | exception | error | structured-query, self-query-retriever, comparator, vector-store |
| A pending deprecation cannot have a scheduled removal | exception | error | deprecation, langchain-core, api-misuse |
| Unexpected generation type | exception | error | generations, type-mismatch, custom-model, async |
| Cannot add incompatible types for key | exception | error | runnable, addabledict, streaming, type-mismatch |
| tags must be a list of the same length as prompts | exception | error | llm, batch, callbacks, validation |
| Tool definition for must include valid type annotations for… | exception | error | tool, base-tool, schema-annotation, subclassing |
| Expected a callable type for `func`.Instead got an… | exception | error | runnable, runnable-lambda, typeerror, validation |
| Expected version to be > . Received . | exception | error | versioning, dependencies, environment |
| If 'exception_key' is specified then input must be a… | exception | error | fallbacks, value-error, input-validation, langchain-core |
| The number of metadatas must match the number of texts.Got | exception | error | vector-store, validation, ingestion |
| Expected keys do not match parameter names of… | exception | error | runnable, message-history, config, factory-signature, valueerror |
| does not implement lazy_load() | exception | error | document-loader, interface, not-implemented |
| exceeded, unable to combine dicts. | exception | error | usage, token-counting, recursion |
| DNS resolution failed | exception | error | ssrf, dns, network, asyncio |
| Saving an example selector is not currently supported | exception | error | prompts, few-shot, serialization, valueerror |
| String tool inputs are not allowed when using tools with… | exception | error | tool, json-schema, input-validation, string-input |
| Cannot concatenate ToolMessageChunks with different names. | exception | error | streaming, tool-calls, message-chunks |
| search_type of not allowed. Valid values are | exception | error | retriever, vector-store, validation, pydantic |
| Unable to get string for blob | exception | error | blob, documents, type-error |
| Asked to cache, but no cache found at `langchain.cache`. | exception | error | cache, configuration, sync |
| Invalid template format | exception | error | prompts, template-format, valueerror, configuration, typo |
| Trying to load an object that doesn't implement… | exception | error | deserialization, serialization, not-implemented |
| Can't load chat prompt without template | exception | error | prompts, chat, loading, config |
| Loading prompt not supported | exception | error | prompts, loading, config, valueerror |
| Cannot stream from a generator function asynchronously.Use… | exception | error | runnable, runnable-lambda, streaming, sync-async-mismatch, asyncio |
| Failed to reach API while trying to render your graph… | exception | error | graph, mermaid, network, http, valueerror |
| Unsupported template file format | exception | error | prompts, loading, file-format, config |
| v2 stream finished without producing a message | exception | error | streaming, v2-protocol, empty-stream, chat-model |
| Could not import python package. Please install it with… | exception | error | dependencies, import, environment |
| Invalid variable name | exception | error | prompts, f-string, template-validation, valueerror, naming |
| time_at_least must be in the past | exception | error | record-manager, time-drift, validation |
| Cannot add templates of different formats | exception | error | prompts, prompt-template, valueerror, operator-overload |
| Cannot specify both alternative and alternative_import | exception | error | deprecation, langchain-core, api-misuse |
| Batch size must be a positive integer, got | exception | error | indexing, batching, validation |
| Parameters should be specified explicitly. Instead they… | exception | error | configuration, pydantic, chat-model |
| Loading images from 'path' has been removed as of 0.3.15… | exception | error | prompts, image, security, version-change, multimodal |
| SyncTextProjection requires a string delta | exception | error | streaming, typeerror, internal-api |
| left and right are of different types. Left type | exception | error | merge, utilities, type-error, configuration |
| unsupported operand type(s) for + | exception | error | messages, type-error, concatenation, langchain-core |
| Unsupported Pydantic schema | exception | error | openai-functions, pydantic, type-mismatch |
| Trying to close tag " "\nlast open tag is " "\nline | exception | error | mustache, sections, nesting |
| Unknown alternative | exception | error | configurable, config, value-error, runtime-config, langchain-core |
| Arg in docstring not found in function signature. | exception | error | tool, docstring, parse-docstring, validation |
| Could not extract Python code from Groq tool arguments… | exception | error | groq, tool-calls, code-interpreter, json-parsing |
| module ' . ' not found ( ) | exception | error | imports, version-skew, langchain-core |
| AsyncTextProjection received a non-string delta | exception | error | streaming, async, typeerror, internal-api |
| Invalid placeholder template | exception | error | prompts, messages-placeholder, from-messages |
| Unable to get bytes for blob | exception | error | blob, documents, type-error |
| callbacks must be the same length as prompts | exception | error | callbacks, input-validation, batch, length-mismatch |
| Expected generate to return a ChatResult, but got | exception | error | fake-model, testing, type-mismatch, custom-model |
| Invalid namespace | exception | critical | security, deserialization, namespace, load |
| () got multiple values for argument | exception | error | deprecation, kwargs, api-migration |
| Func was provided as a coroutine function, but afunc was… | exception | error | runnable, runnable-lambda, typeerror, sync-async-mismatch |
| If 'exception_key' is specified then inputs must be… | exception | error | fallbacks, batch, value-error, input-validation, langchain-core |
| Invalid edge coordinates: start_x= | exception | error | graph, ascii-rendering, layout, rounding, valueerror |
| Tool input must be str or dict. If dict, dict arguments… | exception | error | langchain, tools, runnable, typing, schema |
| unclosed set delimiter tag\nat line | exception | error | mustache, delimiters, prompt-template |
| Both ` _path` and ` ` cannot be provided. | exception | error | prompts, loading, config, validation |
| Found duplicate subgraph | exception | error | graph, mermaid, subgraph, naming, valueerror |
| must be json or yaml | exception | error | prompts, serialization, file-format, core |
| SyncTextProjection requires a string final value | exception | error | streaming, typeerror, internal-api |
| SyncTextProjection received a non-string delta | exception | error | streaming, typeerror, internal-api |
| Unexpected arguments for placeholder message type. Expected… | exception | error | prompts, messages-placeholder, from-messages |
| Unrecognized content block at messages | exception | error | anthropic, openai, content-blocks, multimodal, images |
| Chat model tracing is not supported in for | exception | warning | langchain, tracing, chat-model, schema-format, not-implemented |
| `default` should not be passed to dumps | exception | error | serialization, dump, json, kwargs, security |
| If multiple pydantic schemas are provided then args_only… | exception | error | openai-functions, pydantic, configuration, validation |
| Got unsupported message type | exception | error | prompt-formatting, custom-messages, chat-history |
| Trying to close tag " "\nLooks like it was not opened.\nline | exception | error | mustache, sections, prompt-template |
| Invalid format specifier in f-string template. Nested… | exception | error | prompts, f-string, format-spec, template-validation, valueerror |
| Stream finished without producing a message | exception | error | streaming, empty-stream, chat-model, invariant |
| Unexpected EOF\nthe tag | exception | error | mustache, sections, eof, prompt-template |
| variable should be a list of base messages, got of type | exception | error | prompts, chat, messages, validation, core |
| Got input_variables= | validation | error | prompts, few-shot, input-variables, pydantic-validation |
| Cannot stream a coroutine function synchronously.Use… | exception | error | runnable, runnable-lambda, streaming, sync-async-mismatch, typeerror |
| Failed to reach API while trying to render your graph after… | exception | error | graph, mermaid, network, timeout, retry, valueerror |
| The delete operation to DocumentIndex failed. | exception | error | indexing, document-index, cleanup, delete |
| Expected str, BaseMessage, list[BaseMessage], or… | exception | error | runnable, message-history, input-validation, valueerror |
| Trying to deserialize something that cannot be deserialized… | exception | error | deserialization, legacy, namespace, migration |
| `add_texts` has not been implemented for | exception | error | vector-store, abstract-method, ingestion |
| empty tag at line | exception | error | mustache, prompt-template, parsing |
| Failed to resolve hostname | exception | error | ssrf, security, dns, network, validation |
| Runnable must have an object schema. | exception | error | langchain, tools, runnable, schema |
| The dispatcher API does not accept additional keyword… | exception | error | callbacks, events, api-contract, validation |
| Loading templates with | exception | error | prompts, security, jinja2, loading, code-execution |
| with_structured_output is not implemented for this model. | exception | error | structured-output, bind-tools, custom-model, not-implemented |