fix: Add checks and better error messages on server object for mcp run #297
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mcp run/dev command expects the server object in the python file to be a global variable, and it must be of the FastMCP type and not the low level Server type. The previous error messages may be confusing to users who are not aware of these facts.
Motivation and Context
It is a bit confusing to users who tries to run an MCP server of the low level Server variant with the mcp run command and get unrelated error messages.
How Has This Been Tested?
Run an MCP server of the low level Server variant and check that the correct error message is displayed.
Breaking Changes
None
Types of changes
Checklist
Additional context
N/A