What is the Solution to MCP Error -32602 in Gmail Server Plugin?

Bugs
1

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hi everyone, I am using mcp gmail sever plugin
and I keep getting error

Error executing MCP tool:
MCP error -32602: MCP error -32602: Invalid arguments for tool gmail-send-email: [
{
“code”: “invalid_type”,
“expected”: “string”,
“received”: “array”,
“path”: [
“to”
],
“message”: “Expected string, received array”
}
]

Does there anyone encounter the same error?

2

This might be due to most MCP clients not supporting string arrays

3

I see… I am using claude desktop and cline, both don’t work