Error connecting to streamableHttp server #111
Description
Describe the bug
I'm seeing the following errors trying to load the MCP tool through the smithery.ai link.
Steps
- Follow smithery on click install for cursor
- Authenticate
- I am redirected back to cursor and then my settings for
MySQL Servershows "Loading tools" - Error is thrown, below is the relevant output and a screenshot
2026-02-10 09:28:33.456 [info] Stored server URL for OAuth flow
2026-02-10 09:28:33.456 [info] OAuth provider needs auth callback during connection
2026-02-10 09:28:33.456 [warning] Error connecting to streamableHttp server, falling back to SSE: Unauthorized
2026-02-10 09:28:33.456 [warning] Unauthorized error connecting to streamableHttp server, returning transport
...
2026-02-10 09:28:49.942 [info] Connecting to streamableHttp server
2026-02-10 09:29:49.947 [info] Client closed for command
2026-02-10 09:29:49.951 [warning] Error connecting to streamableHttp server, falling back to SSE: MCP error -32001: Request timed out
2026-02-10 09:29:49.951 [warning] Error connecting to streamableHttp server, falling back to SSE: MCP error -32001: Request timed out
2026-02-10 09:29:49.951 [info] Connecting to SSE server
2026-02-10 09:29:49.952 [error] Client error for command This operation was aborted
2026-02-10 09:29:49.962 [error] Client error for command This operation was aborted
2026-02-10 09:29:49.962 [error] Client error for command Failed to send cancellation: AbortError: This operation was aborted
2026-02-10 09:31:20.322 [error] Client error for command SSE error: Non-200 status code (504)
2026-02-10 09:31:20.323 [error] Error connecting to SSE server after fallback: SSE error: Non-200 status code (504)
Platform
Cursor, Version: 2.4.31
macOS 26.2 (25C56)
MCP Configuration
{
"mcpServers": {
"MySQL Server": {
"type": "http",
"url": "https://server.smithery.ai/@benborla29/mcp-server-mysql",
"headers": {}
}
}
}Screenshots
Additional context
Add any other context about the problem here.