Loading local mcp server failed silently

[rickliujh]

Describe the bug

When some of tools in custom MCP server have incorrect schema definition, Flowise failed to load that MCP server with zero error indication. This cause two problems:

1. remaining tools that available in that MCP server is not accessible because of this
2. making it hard to debug for MCP users

To Reproduce

1. install Smarsheet MCP in the local following the instruction in the readme
2. open chatflow
3. drag a Custom MCP
4. use the config below

{
   "command": "/usr/local/bin/node",
   "args": [
      "-r",
      "/root/smar-mcp/node_modules/dotenv/config",
      "/root/smar-mcp/build/index.js"
   ],
   "env": {
      "SMARTSHEET_API_KEY":"123",
      "SMARTSHEET_ENDPOINT": "https://api.smartsheet.eu/2.0"
   }
}

5. click the "refresh" button in the right side of available actions dropdown list
6. check the server logs

Expected behavior

all other tools provided by SmartSheet MCP should be loaded besides two user related tools that have the schema problem

Screenshots

Flow

No response

Use Method

Docker

Flowise Version

3.0.1

Operating System

Linux

Browser

Other

Additional context

The error of user related tools in SmartSheet MCP failed the loading

Error: Invalid schema type or missing properties
    at createSchemaModel (/usr/src/packages/components/dist/nodes/tools/MCP/core.js:139:15)
    at /usr/src/packages/components/dist/nodes/tools/MCP/core.js:86:29
    at Array.map (<anonymous>)
    at MCPToolkit.get_tools (/usr/src/packages/components/dist/nodes/tools/MCP/core.js:77:49)
    at MCPToolkit.initialize (/usr/src/packages/components/dist/nodes/tools/MCP/core.js:66:37)