ng add nyan-builder can't run

[doggy8088]

How can I solve this problem?

ng add nyan-builder

ng version

Angular CLI: 8.1.1                                                                                                                        Node: 10.16.0                                                                                                                             OS: win32 x64                                                                                                                             Angular: 8.1.1                                                                                                                            ... animations, cdk, cli, common, compiler, compiler-cli, core                                                                            ... forms, language-service, platform-browser                                                                                             ... platform-browser-dynamic, router                                                                                                                                                                                                                                                Package                           Version                                                                                                 -----------------------------------------------------------                                                                               @angular-devkit/architect         0.801.1                                                                                                 @angular-devkit/build-angular     0.801.1                                                                                                 @angular-devkit/build-optimizer   0.801.1
@angular-devkit/build-webpack     0.801.1
@angular-devkit/core              8.1.1
@angular-devkit/schematics        8.1.1
@ngtools/webpack                  8.1.1
@schematics/angular               8.0.6
@schematics/update                0.801.1
rxjs                              6.4.0
typescript                        3.4.5
webpack                           4.35.2

[doggy8088]

The current workaround is:

npm i -D nyan-builder
ng add nyan-builder