ErrLookup › conductor-oss/conductor
conductor-oss/conductor
Conductor is an event driven agentic workflow engine providing durable and highly resilient execution engine for applications and AI Agents · Java · 2,336 source files
Analyzed at cf7c3e4a8a on 2026-08-14. 391 documented errors.
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| : uses unsupported JSON Schema keyword ' ' at . The PAC… | validation | error | agentspan, json-schema, validation, schema-subset |
| Error while evaluating script | exception | error | decision-task, script-evaluation, graaljs, terminate, expression |
| External tool data contains a cyclic structure | validation | error | validation, data-limits, external-data, illegalargument, cycle, workflow-state |
| Unable to sign file-storage URL | exception | error | crypto, hmac, jce, file-storage, native-image, configuration |
| Access denied: path is not under any allowed directory… | validation | warning | security, access-control, document-loader, config, allowlist |
| Responses API failed with status | exception | error | openai, responses-api, http-error, network, api-error, ai |
| Script not evaluated within | exception | error | conductor, graalvm, javascript, script-evaluation, timeout, non-transient |
| Failed to generate SQS policy | exception | error | sqs, aws, json-serialization, jackson, policy |
| No dynamic tasks could be created for the Workflow | exception | error | fork-join-dynamic, terminate, task-definition, duplicate-reference |
| Unable to upload payload to external storage for workflow | exception | error | external-storage, payload, upload, non-transient, configuration |
| Invalid sslProtocol | exception | error | amqp, ssl, tls, configuration, security, jvm |
| Access denied: link-local address range is blocked | validation | critical | security, ssrf, access-control, document-loader, dns, cloud-metadata |
| PLAN_EXECUTE ' ': tool ' ' failed to serialise for PAC ( )… | exception | error | plan-execute, serialization, jackson, tool-config, agentspan, fail-closed |
| Gemini generateAudio failed | exception | error | gemini, audio, tts, network, io |
| Error acquiring lock when creating workflow | exception | warning | lock, idempotent-start, transient, concurrency, redis |
| Agent Card resolved from | exception | error | a2a, agent-card, configuration, non-retryable |
| AGENT (conductor) requires 'prompt' when resuming an… | validation | error | conductor, ai-agent, validation, non-retryable, task-input |
| Anthropic Messages API call failed | exception | error | anthropic, network, io, timeout, chat |
| agentConfig is required when framework is not specified | exception | error | validation, resolve-config, bad-request, agent-config |
| OAuth token request failed: HTTP | exception | error | oauth, auth, azure, network, credentials, runtimeexception |
| Failed to submit video generation: | exception | error | openai, video-generation, sora, network, api-error, ai |
| No pending HUMAN task found in execution | exception | warning | illegal-state, hitl, respond, state-mismatch, human-task |
| Unable to find queue name for task | exception | error | event-task, queue, provider, non-transient, connectivity |
| Access denied: host ' ' is blocked | validation | critical | security, ssrf, access-control, document-loader, cloud-metadata, denylist |
| Image generation not supported by the model yet | exception | error | anthropic, image-generation, unsupported-operation, capability-mismatch |
| Invalid input - Operation | validation | error | external-storage, validation, api, enum |
| Anthropic Messages API failed with status | exception | error | anthropic, http-error, api-error, authentication, rate-limit |
| Empty 'evaluatorType' in INLINE task's input parameters. A… | exception | error | inline-task, evaluator, terminate, validation, blank-value |
| Empty response downloading image from | exception | error | gemini, video, download, empty-response, image-to-video |
| SWARM handoff type must be on_tool_result, on_text_mention… | validation | error | swarm, handoff, config-validation, agentspan |
| Not supported | exception | error | huggingface, embeddings, unsupported-operation, ai, provider |
| Chat Completions API failed with status | exception | error | openai-compatible, chat-completion, http-error, network, api-error, ai |
| Error preparing chat completion task input | exception | critical | conductor, task-mapper, chat-completion, workflow-termination, jackson, template |
| No agent definition found for | http | error | not-found, agent-def, metadata, public-api |
| Input ' ' is invalid. Cannot deserialize a list of Workflow… | exception | error | fork-join-dynamic, deserialize, terminate, workflow-task, json |
| Unsupported model | exception | error | bedrock, embeddings, unsupported-model, validation, cohere |
| Workflow id already belongs to parent workflow task … | exception | error | idempotent-start, parent-workflow, non-transient, ownership |
| Error communicating with S3 - operation | exception | error | s3, aws, network, transient, storage, iam |
| SKILL.md frontmatter must be a mapping | validation | error | skill-registry, yaml, frontmatter, validation |
| {error} | exception | error | mcp, json-rpc, protocol-error, tool-call |
| Error reading workflow | exception | error | workflow, serialization, index-dao, transient, jackson |
| %s | exception | error | script, javascript, graalvm, validation, illegal-argument, syntax-error |
| Empty 'expression' in Inline task's input parameters. A… | exception | error | inline-task, workflow-definition, input-validation, terminate-workflow |
| error uploading file | exception | error | document-loader, upload, http, okhttp, runtimeexception |
| Configured file storage does not support content streaming | exception | error | file-storage, streaming, backend, conductor, java |
| Error loading queue: , for task: , error | exception | error | event-task, queue, provider, illegal-state, configuration |
| Unknown evaluator ' ' in INLINE task. | exception | error | inline-task, evaluator, terminate, configuration, unknown-type |
| Access denied: loopback address is blocked | validation | critical | security, ssrf, access-control, document-loader, dns, loopback |
| Circular skill reference detected | validation | error | skill-registry, cross-skill-ref, cycle, dependency-graph |
| Failed to list MCP tools from | exception | error | mcp, wrapper, network, error-handling, diagnostics |
| conductor.file-storage.conductor.signing.keys is required… | validation | critical | config, signing, startup, file-storage, conductor, java |
| Embeddings API call failed: | exception | error | openai, embeddings, network, api-error, ai |
| Error evaluating the script | exception | error | conductor, graalvm, javascript, script-evaluation, polyglot, terminate-workflow |
| Registered agent definition is missing metadata.agentDef | exception | critical | data-integrity, metadata, agent, illegal-state |
| Agent not found | http | error | not-found, agent, metadata, classifier |
| Unsupported agentType | validation | error | a2a, input-validation, non-retryable, configuration |
| Empty response downloading image from | exception | error | openai, video-generation, download, network, image, ai |
| NULL input passed when starting workflow | validation | error | workflow-start, validation, input, external-storage |
| PLAN_EXECUTE harness | exception | error | plan-execute, guardrails, fallback, config-validation, agentspan |
| Workflow can not be serialized to json | exception | error | workflow, serialization, archival, index-dao, transient |
| File-storage URL signing is not enabled | exception | error | configuration, file-storage, url-signing, spring, hmac |
| Access denied: file name | validation | critical | security, access-control, document-loader, secrets, denylist |
| Workflow: is not in terminal state, unable to rerun. | exception | error | rerun, workflow-status, conflict, terminal-state |
| Cannot find the task definitions for the following tasks… | validation | error | metadata, task-definition, workflow-definition, validation |
| Not valid duration | validation | error | duration, parsing, configuration, date-time |
| Invalid skill package zip | exception | error | java, conductor, skill-registry, zip, package-integrity, validation |
| Fail to open channel | exception | error | amqp, rabbitmq, channel |
| Failed to open connection | exception | critical | amqp, rabbitmq, connection, network |
| Subworkflow status does not conform to relevant task status. | exception | critical | sub-workflow, enum-mismatch, non-transient, version-compatibility |
| ${usx.message} | exception | error | plan-execute, json-schema, schema-validation, input-schema, agentspan |
| Chat Completions API call failed: | exception | error | openai-compatible, chat-completion, network, api-error, ai |
| Expression is not well formatted | validation | error | validation, workflow-def, javascript, expression, conductor, java |
| Failed to generate PDF from markdown | exception | error | pdf, pdfbox, io, rendering, error-handling |
| Failed to check video status: | exception | error | openai, video-generation, sora, polling, network, ai |
| Invalid / Unsupported sink specified | exception | error | event-task, sink, queue, illegal-state, configuration |
| This method is not currently implemented in… | exception | error | cassandra, persistence, dao, ttl, unsupported-operation, backend-capability |
| Dynamic join definition is not followed by a join task. … | exception | error | fork-join-dynamic, join, workflow-definition, terminate, blueprint |
| Execution not found | http | error | not-found, execution, agent-dag, validation |
| Failed to check rate limit for task | exception | error | cassandra, rate-limiting, transient, network, driver |
| Task failed with status: and reason | exception | error | conductor, workflow, decider, permissive-task, terminate-workflow, task-failure |
| Access denied: path matches blocked prefix | validation | critical | security, ssrf, access-control, document-loader, denylist |
| No such workflow found by id | http | error | workflow, execution-dao, not-found, control-flow |
| Empty response downloading from | exception | error | gemini, download, empty-response, signed-url, vertex-ai |
| Unable to download payload from external storage path | exception | error | external-storage, payload, non-transient, network, serialization |
| Task / exceeded total timeout of seconds (elapsed seconds… | exception | error | conductor, workflow, decider, retry, total-timeout, task-timeout, terminate-workflow |
| env-backed secrets are read-only | exception | warning | secrets, env-backed, read-only, configuration |
| Error removing workflow | exception | error | workflow, execution-dao, removal, transient, ttl |
| Failed to get workflow | exception | error | cassandra, persistence, transient, driver, network, retry, dao |
| inspectPlan: agentConfig.strategy must be 'plan_execute'… | validation | error | validation, inspect-plan, strategy, bad-request |
| Stability AI image generation failed: | exception | error | stabilityai, image-generation, runtime-exception, wrapper, api-key |
| Invalid skill package path | validation | critical | skill-registry, zip-slip, path-traversal, security |
| Streaming produced no events (stream may have dropped)… | exception | warning | a2a, streaming, sse, retryable, network |
| conductor.app.sweeper-thread-count must be greater than 0. | exception | critical | configuration, startup, thread-pool, sweeper |
| Error communicating with Azure | exception | error | azure, blob-storage, network, sas, external-payload |
| Invalid row with entityKey | exception | error | cassandra, persistence, data-integrity, non-transient, schema, dao |
| Failed to submit video generation | exception | error | gemini, video, veo, api-error, async |
| Failed to download image from | exception | error | openai, video-generation, download, network, image, io, ai |
| No evaluator registered for type | exception | error | switch-task, evaluator, terminate, configuration |
| Refusing to forward credentials across an MCP redirect | exception | error | mcp, security, http-redirect, credential-leakage, ssrf |
| This method is not implemented in CassandraExecutionDAO… | exception | error | cassandra, not-implemented, execution-dao, task |