An unhandled exception occurred: Cannot find module source-map

Hello

Please check the bower.json file ignore section. as mention below.

"ignore": [
    "**/.*",
    "node_modules",
    "bower_components",
    "test",
    "tests"
],

if you have a node_modules folder with a different name either you need to add it to ignore the section or you can physically delete it and try to reinstall it. 

Thanks

delete node_modules and do npm install 

Try deleting 'node_modules' and 'package-lock.json' files from your project and reinstall the dependencies by running "npm install" or "yarn install".

Hi, delete node_modules and try again.