No projects support the 'serve' target.

[kpeters-cbsi]

I installed this package per the instructions in the readme and from the project root attempted to run "ng serve". I got the error message An unhandled exception occurred: No projects support the 'serve' target.. Output of ng version:

Angular CLI: 11.2.5
Node: 15.12.0
OS: linux x64

Angular: 2.4.10
... common, compiler, compiler-cli, core, forms, http
... platform-browser, platform-browser-dynamic
Ivy Workspace: <error>

Package                      Version
------------------------------------------------------
@angular-devkit/architect    0.1102.5 (cli-only)
@angular-devkit/core         11.2.5 (cli-only)
@angular-devkit/schematics   11.2.5 (cli-only)
@angular/router              3.4.10
@schematics/angular          11.2.5 (cli-only)
@schematics/update           0.1102.5 (cli-only)
rxjs                         5.5.12
typescript                   2.0.10