Attempted import error: '../Settings' does not contain a default export (imported as 'Settings').
you must importing the wrong file in your current file
for an exaple you have two files
A.js & B.js
in ===========A.js========
you are importing B.js
imnport {b} from './B'
And in ===========B.js========
you are importing A in your B file
imnport {A} from './A'