Different yarn.lock file was needed (OS specific)
so node_modules and yarn.lock file was removed
then installed again
then followed this step
1. Install Xcode https://github.com/nodejs/node-gyp#on-macos
2. Copy .env file
3. "noImplicitAny": false to compilerOptions in tsconfig
# Material-ui and typescript problem
```
import Fab from '@material-ui/core/Fab';
import styled from 'styled-components';
export const OptionButton = styled<any>(Fab)`
position: fixed !important;
opacity: 0.8;
right: 1%;
bottom: 1%;
z-index: 999;
`
```
here I have to give `any` as its interface to fix interface error on where its Component is being used