Error while after clicking install/uninstall related to killing process

[cdes]

Error: kill EPERM
    at process.kill (internal/process.js:186:13)
    at killPid (/Applications/Figma Plus.app/Contents/Resources/app.asar/node_modules/tree-kill/index.js:73:17)
    at /Applications/Figma Plus.app/Contents/Resources/app.asar/node_modules/tree-kill/index.js:50:21
    at Array.forEach (<anonymous>)
    at /Applications/Figma Plus.app/Contents/Resources/app.asar/node_modules/tree-kill/index.js:48:23
    at Array.forEach (<anonymous>)
    at killAll (/Applications/Figma Plus.app/Contents/Resources/app.asar/node_modules/tree-kill/index.js:47:27)
    at /Applications/Figma Plus.app/Contents/Resources/app.asar/node_modules/tree-kill/index.js:26:13
    at ChildProcess.onClose (/Applications/Figma Plus.app/Contents/Resources/app.asar/node_modules/tree-kill/index.js:94:17)
    at ChildProcess.emit (events.js:182:13)

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Figma Plus 1.0.0
Electron 3.0.9
darwin 17.7.0
Locale: en-US