when i give this command
ionic cordova build android --prod
i am getting this error.
[WARN] Error occurred during command execution from a CLI plugin (@ionic/cli-plugin-cordova). Your plugins may be out of date.
Error: ./~/firebase/app/shared_promise.js
Module not found: Error: Can't resolve 'promise-polyfill' in 'C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\node_modules\firebase\app'
resolve 'promise-polyfill' in 'C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\node_modules\firebase\app'
Parsed request is a module
using description file: C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\node_modules\firebase\package.json (relative path: ./app)
Field 'browser' doesn't contain a valid alias configuration
after using description file: C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\node_modules\firebase\package.json (relative path: ./app)
resolve as module
looking for modules in C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\node_modules
using description file: C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\package.json (relative path: ./node_modules)
Field 'browser' doesn't contain a valid alias configuration
after using description file: C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\package.json (relative path: ./node_modules)
using description file: C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\package.json (relative path: ./node_modules/promise-polyfill)
as directory
C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\node_modules\promise-polyfill doesn't exist
no extension
Field 'browser' doesn't contain a valid alias configuration
C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\node_modules\promise-polyfill doesn't exist
.ts
Field 'browser' doesn't contain a valid alias configuration
C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\node_modules\promise-polyfill.ts doesn't exist
.js
Field 'browser' doesn't contain a valid alias configuration
C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\node_modules\promise-polyfill.js doesn't exist
.json
Field 'browser' doesn't contain a valid alias configuration
C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\node_modules\promise-polyfill.json doesn't exist
[C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\node_modules\promise-polyfill]
[C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\node_modules\promise-polyfill]
[C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\node_modules\promise-polyfill.ts]
[C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\node_modules\promise-polyfill.js]
[C:\Users\BhatRitesh\Desktop\Think-Digital\campusLink\node_modules\promise-polyfill.json]
@ ./~/firebase/app/shared_promise.js 38:35-62
@ ./~/firebase/app/firebase_app.js
@ ./~/firebase/app.js
@ ./src/pages/login/login.ts
@ ./src/app/app.module.ts
@ ./src/app/app.module.ngfactory.ts
@ ./src/app/main.ts
Can anyone tell how to resolve this error.?