This document lists all confirmed bug fixes included in the FastGPT 4.14.9 self-hosted upgrade release, covering issues across workflow execution, plugin integration, model invocation, UI rendering, and deployment stability.
Workflow & Plugin Corrections
This section addresses core workflow and plugin-related issues:
- Fixed missing preservation of plugin execution details when a workflow nested a plugin, and removed all tool-type prefixes from relevant output data.
- Resolved an error where updating and saving an MCP toolkit prevented correct tool calls, caused by an incorrect toolId lookup during initialization.
- Corrected incorrect value substitution in workflow variables that contained special characters (
$.). - Fixed a version retrieval error that occurred when referencing an agent tool within a workflow.
- Restored lost form input content in workflow preview mode after re-opening the preview dialog.
- Added missing selectable condition options for the
arrayAnytype in the condition evaluator. - Fixed missing file link variables in the start node for video/audio custom file type workflows.
- Resolved partial context concatenation errors in AgentV2 workflow execution.
Model Invocation & API Tooling Fixes
The following table outlines corrected model and API-related issues:
| Fix Category | Specific Resolution |
|---|---|
| Model Parameter Cleanup | Removed unsupported model parameters when switching from a model that supports specific parameters to one that does not, eliminating model invocation failures caused by retained invalid parameters. |
| API Dataset Search | Restored the missing search box in the API Dataset file list to improve file discovery. |
| Markdown Rendering | Fixed unescaped user input messages that failed to properly render in Markdown format. |
UI & Chat History Corrections
This section fixes display and rendering issues for shared links and chat history:
- Corrected incorrect rendering of AI responses in chat history when closing a shared link's display status, ensuring consistent chat log presentation.
Deployment & Stability Fixes
This section addresses deployment and login-related stability issues:
- Fixed an async session issue in the login endpoint that produced repetitive, unwanted error logs in server outputs.
- Corrected a failure to apply custom fields defined in subscription plans, ensuring correct plan configuration application.
Source: FastGPT official source
Applicability and version scope
Use this page for the documented Deployment and upgrades scenario. Confirm the FastGPT, dependency, API, and deployment versions in the official source before applying a change.
Safety guardrails
Use [REDACTED_CREDENTIAL] for credentials and private data. Confirm the documented environment and version before review.
Rollback guidance
Restore the prior technical-content authority snapshot. Restore saved configuration and data snapshots, then repeat the smallest verification scenario.