When the configuration is not quite right, and you try to connect to the mcp, you are greeted with an error that isn't helpful or explains what needs to be done to fix. You get:
ERROR: SyntaxError: Unexpected token '<', "<!DOCTYPE "... is not valid JSON
Which likely is received because the app is expecting to receive JSON and not HTML. This is a difficult error to recover from because it isn't clear what the next steps should be:
Please advise and improve error handling.
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There are multiple ways the MCP config can be misconfigured. Some of them can’t be handled, as they don’t even hit the MCP route. Can you drop your MCP config so we can check, and add the error handling if something is missing and can be added?