Shopify app stopped working all of a sudden

Shopify Apps
1

Hi,

I am developing Shopify application with node and it was working fine yesterday and today all of a sudden it started giving error when i use command “npm run dev” :
request to https://partners.shopify.com/api/cli/graphql failed, reason: connect ETIMEDOUT 104.16.254.71:443

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i am not sure is it somekind of version issue or issue from my side.
can any one help me with this.

Thanks in advance