claude-code - 💡(How to fix) Fix Notion plugin MCP server: persistent Internal Server Error after reinstall [1 participants]

The Notion plugin (notion@claude-plugins-official, v0.1.0) fails to connect with an "Internal Server Error" after multiple attempts to reconnect, re-authenticate, and reinstall. 5. Ran /mcp again — still "Internal Server Error" "Internal Server Error" on every connection attempt. No auth prompt appears — it fails before reaching authentication.

TL;DR

The Notion plugin's "Internal Server Error" may be resolved by checking the plugin's configuration and authentication settings, as the issue seems to be specific to the Notion plugin and not a general MCP server issue.

Guidance

• Verify that the Notion API credentials and authentication settings are correct and have not expired or been revoked.
• Check the Notion plugin's configuration for any specific settings that may be causing the issue, such as API endpoint URLs or authentication tokens.
• Attempt to connect to the Notion API directly using a tool like curl or a web browser to see if the issue is specific to the MCP server or the Notion plugin.
• Review the MCP server logs for any error messages related to the Notion plugin to gain more insight into the issue.

Example

No code snippet is provided as the issue does not seem to be related to a specific code problem, but rather a configuration or authentication issue.

Notes

The issue may be related to a transient error or a specific configuration issue with the Notion plugin, as other MCP plugins are working correctly. Further investigation into the plugin's configuration and authentication settings is needed to resolve the issue.

Recommendation

Apply workaround: Attempt to reset the Notion plugin's configuration and authentication settings to their default values, and then try reconnecting to the Notion API. This may resolve the issue if it is related to a misconfiguration or expired authentication credentials.