NPM Run Build Shows Errors

I get the following error when i try to execute the command npm run build on my game project in visual studio code:

[webpack-cli] Failed to load 'C:\Users\vivek\Learning\demo\platformer+game\platformer game\webpack\webpack.dev.js' config
[webpack-cli] Invalid options object. Copy Plugin has been initialized using an options object that does not match the API schema.  
 - options[0] has an unknown property 'to'. These properties are valid:
   object { patterns, options? }
 - options[1] has an unknown property 'to'. These properties are valid:
   object { patterns, options? }
 - options[2] has an unknown property 'to'. These properties are valid:
   object { patterns, options? }

Can anyone help?

sorry, i think this post is in the wrong forum, it should be in webpack and not phaser3