claude-code - 💡(How to fix) Fix [Bug] Plugin uninstall fails with case-sensitivity mismatch in settings.json lookup [1 participants]

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/ilanbux/.local/share/claude/versions/2.1.128 (expected in multi-process scenarios)\n at Nq6 (/$bunfs/root/src/entrypoints/cli.js:2764:2177)\n at uGH (/$bunfs/root/src/entrypoints/cli.js:2764:1257)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-05-05T12:31:16.152Z"},{"error":"Error: Plugin "Notion@claude-plugins-official" is not installed in user scope. Use --scope to specify the correct scope.\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:6366:34845)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-05-05T12:45:35.169Z"},{"error":"Error: Plugin "Notion@claude-plugins-official" is not installed in user scope. Use --scope to specify the correct scope.\n at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:6366:34845)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-05-05T12:45:43.996Z"},{"error":"Error: Tool mcp__plugin_Notion_notion__notion-search not found\n at GG7 (/$bunfs/root/src/entrypoints/cli.js:3123:36246)\n at UO (/$bunfs/root/src/entrypoints/cli.js:499:21133)\n at wY (/$bunfs/root/src/entrypoints/cli.js:499:39891)\n at aKH (/$bunfs/root/src/entrypoints/cli.js:499:50702)\n at r2_ (/$bunfs/root/src/entrypoints/cli.js:499:87723)\n at GrH (/$bunfs/root/src/entrypoints/cli.js:499:86683)\n at WrH (/$bunfs/root/src/entrypoints/cli.js:499:86503)\n at vvH (/$bunfs/root/src/entrypoints/cli.js:499:82834)\n at O_ (/$bunfs/root/src/entrypoints/cli.js:499:6550)\n at vH (/$bunfs/root/src/entrypoints/cli.js:499:5004)","timestamp":"2026-05-05T12:45:53.800Z"},{"error":"Error: Tool mcp__plugin_Notion_notion__notion-search not found\n at GG7 (/$bunfs/root/src/entrypoints/cli.js:3123:36246)\n at UO (/$bunfs/root/src/entrypoints/cli.js:499:21133)\n at wY (/$bunfs/root/src/entrypoints/cli.js:499:39891)\n at aKH (/$bunfs/root/src/entrypoints/cli.js:499:50702)\n at r2_ (/$bunfs/root/src/entrypoints/cli.js:499:87723)\n at GrH (/$bunfs/root/src/entrypoints/cli.js:499:8668…

TL;DR

The uninstallation of plugins via the UI fails due to a case-sensitivity mismatch between the plugin slug in settings.json and the display name in the UI, and a workaround involves manual cleanup and normalization of plugin slugs.

Guidance

• The issue is likely caused by the case mismatch between the storage key and the lookup key for the plugin, so normalizing plugin slugs to a single canonical case (lowercase) could resolve the issue.
• To verify the issue, check the settings.json file for the plugin slug and compare it to the display name in the UI.
• A temporary workaround is to manually remove the plugin from enabledPlugins in settings.json, delete the cache directory, and restart Claude Code.
• To mitigate the issue, consider comparing plugin names case-insensitively when resolving the plugin name to its enabledPlugins entry.

Example

No code snippet is provided as the issue is related to configuration and plugin management.

Notes

The provided workaround is a manual process and may not be suitable for all users, and the suggested fix requires changes to the plugin management code.

Recommendation

Apply the workaround of manual cleanup and normalization of plugin slugs, as it provides a temporary solution to the issue, and consider implementing the suggested fix to normalize plugin slugs to a single canonical case (lowercase) for a more permanent resolution.