ZOD errors when connecting to MCP server

Hi, I'm trying to develop a simple mcp server. When I'm connecting with the [MCPInspector](https://modelcontextprotocol.io/docs/tools/inspector) I'm getting a ZOD error: ``` Created client transport Created server transport Received POST message for sessionId b14088d5-5726-4278-92c1-d89c01822cdd Received POST message for sessionId b14088d5-5726-4278-92c1-d89c01822cdd Error from MCP server: ZodError: [ { "code": "invalid_union", "unionErrors": [ { "issues": [ { "code": "invalid_union", "unionErrors": [ { "issues": [ { "code": "invalid_type", "expected": "string", "received": "null", "path": [ "id" ], "message": "Expected string, received null" } ], "name": "ZodError" }, { "issues": [ { "code": "invalid_type", "expected": "number", "received": "null", "path": [ "id" ], "message": "Expected number, received null" } ], "name": "ZodError" } ], "path": [ "id" ], "message": "Invalid input" }, { "code": "invalid_type", "expected": "string", "received": "undefined", "path": [ "method" ], "message": "Required" }, { "code": "unrecognized_keys", "keys": [ "error" ], "path": [], "message": "Unrecognized key(s) in object: 'error'" } ], "name": "ZodError" }, { "issues": [ { "code": "invalid_type", "expected": "string", "received": "undefined", "path": [ "method" ], "message": "Required" }, { "code": "unrecognized_keys", "keys": [ "id", "error" ], "path": [], "message": "Unrecognized key(s) in object: 'id', 'error'" } ], "name": "ZodError" }, { "issues": [ { "code": "invalid_union", "unionErrors": [ { "issues": [ { "code": "invalid_type", "expected": "string", "received": "null", "path": [ "id" ], "message": "Expected string, received null" } ], "name": "ZodError" }, { "issues": [ { "code": "invalid_type", "expected": "number", "received": "null", "path": [ "id" ], "message": "Expected number, received null" } ], "name": "ZodError" } ], "path": [ "id" ], "message": "Invalid input" }, { "code": "invalid_type", "expected": "object", "received": "undefined", "path": [ "result" ], "message": "Required" }, { "code": "unrecognized_keys", "keys": [ "error" ], "path": [], "message": "Unrecognized key(s) in object: 'error'" } ], "name": "ZodError" }, { "issues": [ { "code": "invalid_union", "unionErrors": [ { "issues": [ { "code": "invalid_type", "expected": "string", "received": "null", "path": [ "id" ], "message": "Expected string, received null" } ], "name": "ZodError" }, { "issues": [ { "code": "invalid_type", "expected": "number", "received": "null", "path": [ "id" ], "message": "Expected number, received null" } ], "name": "ZodError" } ], "path": [ "id" ], "message": "Invalid input" } ], "name": "ZodError" } ], "path": [], "message": "Invalid input" } ] at get error (file:///Users/ralphkube/.npm/_npx/5a9d879542beca3a/node_modules/zod/v3/types.js:39:31) at ZodUnion.parse (file:///Users/ralphkube/.npm/_npx/5a9d879542beca3a/node_modules/zod/v3/types.js:114:22) at deserializeMessage (file:///Users/ralphkube/.npm/_npx/5a9d879542beca3a/node_modules/@modelcontextprotocol/sdk/dist/esm/shared/stdio.js:26:33) at ReadBuffer.readMessage (file:///Users/ralphkube/.npm/_npx/5a9d879542beca3a/node_modules/@modelcontextprotocol/sdk/dist/esm/shared/stdio.js:19:16) at StdioClientTransport.processReadBuffer (file:///Users/ralphkube/.npm/_npx/5a9d879542beca3a/node_modules/@modelcontextprotocol/sdk/dist/esm/client/stdio.js:141:50) at Socket.<anonymous> (file:///Users/ralphkube/.npm/_npx/5a9d879542beca3a/node_modules/@modelcontextprotocol/sdk/dist/esm/client/stdio.js:103:22) at Socket.emit (node:events:507:28) at addChunk (node:internal/streams/readable:559:12) at readableAddChunkPushByteMode (node:internal/streams/readable:510:3) at Readable.push (node:internal/streams/readable:390:5) { issues: [ { code: 'invalid_union', unionErrors: [Array], path: [], message: 'Invalid input' } ], addIssue: [Function (anonymous)], addIssues: [Function (anonymous)], errors: [ { code: 'invalid_union', unionErrors: [Array], path: [], message: 'Invalid input' } ] } ```