MCP · error fixes

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MCP error fixes from the official GitHub issues

Each page copies one fix from the vendor’s own GitHub repository: the issue was closed by a merged pull request, or a maintainer or the reporter confirmed the fix. A person approved every page. KanseiLink has not re-run the fixes; read the issue before applying.

ServiceErrorFixIssue
BacklogUnexpected error (HTTP 500) while accessingFixed in 0.20.0#222
BacklogMCP error -32602: Input validation error: Invalid arguments for tool add_issueFixed in 0.11.1#118
Backlogsh: backlog-mcp-server: command not foundFixed in 0.8.1#71
freee401 company_not_foundWorkaround#479
freeeCouldn't reach the MCP server. You can check the server URL and verify the server is…Workaround#439
freee401 UnauthorizedWorkaround#471
freeeMCP error -32602: Input validation error: Invalid arguments for tool freee_api_put: [Fixed in v0.26.4#410
freeeStarting OAuth flow...Workaround#329
GitHubFailed to start MCP client for remote server gh-copilot_spaces: Error: Error POSTing to…Workaround#1250
GitHubOAuth flow doesn't just work with my agent (moo) for lack of OASMWorkaround#2901
GitHubVisit https://github.com/login/device and enter the code XXXX-XXXX to authorize the…Workaround#2812
GitHubPOST https://api.github.com/repos/{owner}/{repo}/issues/{issue_number}/comments: 403 Must…Fixed#1314
GitHubGitHub MCP lockdown mode (prompt injection defense, issue #844)Workaround#844
GitHubhow can we enable using mcp server in github copilot for jet brains?Workaround#1687
GitHub--read-only flag fails to restrict write tools when using the new http commandWorkaround#2156
GitHubGithub MCP Server Not Exposing Full Toolset (Missing Actions, Workflows, and Run Status…Workaround#2289
GitHubThe listed users and repositories cannot be searched either because the resources do not…Workaround#2206
GitHubIncompatible auth server: does not support dynamic client registrationWorkaround#1663
GitHubMCP error -32603: Not Found: Resource not found: Not FoundWorkaround#153
GitHubInvalid schema for function 'get_me': In context=(), object schema missing properties.Fixed in v0.24.1#1548
GitHubError sending message to https://api.githubcopilot.com/mcp/: TypeError: fetch failedWorkaround#1460
GitHubTool 'get_me' not foundWorkaround#275
GitHubget_copilot_space and list_copilot_spaces are not appearing anymore in the github MCP…Workaround#1241
GitHubdocker: Error response from daemon: Head…Workaround#192
kintoneThe default validator supports JSON Schema 2020-12 only; pass a pre-configured Ajv…Fixed in v1.9.2#544
NotionBug: `replace_content` and `replace_content_range` trash child pages and databasesFixed#171
Notionenv: node: No such file or directoryWorkaround#47
Notion{"error":"invalid_token","error_description":"Invalid token format"}Workaround#106
NotionAPI token is invalid.Fixed in 1.9.0#109

AI agents get the newest few of these per service from lookup on the KanseiLink MCP server (https://mcp.kansei-link.com/mcp), field issue_facts.