gatsby-plugin-preload-fonts issue

[ghost]

Hi everybody
I'm working to increase performance of my project so i had install gatsby-plugin-preload-fonts plugin. After installing i rebiuld my code & run "npm run preload-fonts" this command in second terminal now i'm getting error
crawling routes ████████████████████████████████ 92% eta 37.2s (node:7668) UnhandledPromiseRejectionWarning: TimeoutError: Navigation timeout of 30000 ms exceeded
at Promise.then (C:\xampp\i-gatsby\node_modules\puppeteer\lib\LifecycleWatcher.js:100:111)
-- ASYNC --
at Frame. (C:\xampp\i-gatsby\node_modules\puppeteer\lib\helper.js:94:19)
at Page.goto (C:\xampp\i-gatsby\node_modules\puppeteer\lib\Page.js:485:53)
at Page. (C:\xampp\i-gatsby\node_modules\puppeteer\lib\helper.js:95:27)
at main (C:\xampp\i-gatsby\node_modules\gatsby-plugin-preload-fonts\prepare\index.js:109:16)
at process._tickCallback (internal/process/next_tick.js:68:7)
(node:7668) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:7668) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
Can any one help me in this