React-datepicker: Cannot read property 'numerator' of undefined

[thilinaucsc]

I develop web app with react I got error in there like below

`ERROR in ./node_modules/css-loader!./node_modules/less-loader/dist/cjs.js!./node_modules/react-datepicker/dist/react-datepicker.css
Module build failed:

    margin: 0;
    height: calc(195px + calc(1.7rem / 2));
  ^

Cannot read property 'numerator' of undefined
in /home/thilina/Documents/office/Agent-Customer-Portal/node_modules/react-datepicker/dist/react-datepicker.css (line 167, column 8)
@ ./node_modules/react-datepicker/dist/react-datepicker.css 4:14-105 18:2-22:4 19:20-111
@ ./src/components/independentComponents/DivFormField.js
@ ./src/components/independentComponents/FieldSet.js
@ ./src/ui/Register/RegisterQuizUI.js
@ ./src/ui/Register/RegisterUI.js
@ ./src/controller/login/RegisterController.js
@ ./src/container/LoginContainer.js
@ ./src/App.js
@ multi (webpack)-dev-server/client?http://localhost:9000 webpack/hot/dev-server ./src/App.js
webpack: Failed to compile.
`

I find error in

height: calc(195px + calc(1.7rem / 2));

can you update code to

height: calc(195px + (1.7rem / 2));

[kodell]

Manually making your suggested change resolved this problem for me too. +1

[Raido0812]

not sure if this helps,
setting strictMath option on less-loader to true fixed the issue for me.