Supabase MCP server authentication issues

Hi! I've been using the locally hosted supabase MCP server for a month now and it's been fantastic for the most part, but suddenly last week it started throwing authentication errors "Unauthorized. Please provide a valid access token to the MCP server via the --access-token flag or SUPABASE_ACCESS_TOKEN."

The token (API Key) hasn't changed, and the same token is being used in the app itself with no issues. I just updated to 0.5.9 from 0.5.5 to see if that would fix the issue, to no avail. Any thoughts on what I'm doing wrong?
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