ng-build error for 1.0.0-beta.13 version

[paladin14]

Angular version: 7.3.8

ng-multiselect-dropdown version:
1.0.0-beta.13

Description of issue: Need to build my app but there's a build error. I'm currently using 1.0.0-beta.13 because I need to use ng-template

Steps to reproduce: run command: ng build --prod

Expected result: Successful build

Actual result: build failed

ERROR in ./node_modules/ng-multiselect-dropdown/fesm5/ng-multiselect-dropdown.js Module build failed (from ./node_modules/@angular-devkit/build-optimizer/src/build-optimizer/webpack-loader.js): TypeError: Cannot read property 'kind' of undefined