Error running ng run build:prod (An unhandled exception occurred: Project does not exist.)

[Nitin Gupta]

Here is the stack trace 

[error] Error: Project does not exist.

    at WorkspaceNodeModulesArchitectHost.findProjectTarget (C:\Users\vedic\angular-twilio-authy\node_modules\@angular-devkit\architect\node\node-modules-architect-host.js:94:23)

    at WorkspaceNodeModulesArchitectHost.getBuilderNameForTarget (C:\Users\vedic\angular-twilio-authy\node_modules\@angular-devkit\architect\node\node-modules-architect-host.js:13:39)

    at RunCommand.runSingleTarget (C:\Users\vedic\angular-twilio-authy\node_modules\@angular\cli\models\architect-command.js:176:55)

    at RunCommand.runArchitectTarget (C:\Users\vedic\angular-twilio-authy\node_modules\@angular\cli\models\architect-command.js:219:35)

    at RunCommand.run (C:\Users\vedic\angular-twilio-authy\node_modules\@angular\cli\commands\run-impl.js:14:25)

    at RunCommand.validateAndRun (C:\Users\vedic\angular-twilio-authy\node_modules\@angular\cli\models\command.js:134:39)

    at process._tickCallback (internal/process/next_tick.js:68:7)

    at Function.Module.runMain (internal/modules/cjs/loader.js:834:11)

    at startup (internal/bootstrap/node.js:283:19)

    at bootstrapNodeJSCore (internal/bootstrap/node.js:623:3)

Here is my configuration

Angular CLI: 8.3.26

Node: 10.20.1

OS: win32 x64

Angular: 8.2.14

... animations, common, compiler, compiler-cli, core, forms

... language-service, platform-browser, platform-browser-dynamic

... platform-server, router

Package                                    Version

--------------------------------------------------------------------

@angular-devkit/architect                  0.803.26

@angular-devkit/build-angular              0.803.26

@angular-devkit/build-optimizer            0.803.26

@angular-devkit/build-webpack              0.803.26

@angular-devkit/core                       8.3.26

@angular-devkit/schematics                 8.3.26

@angular/cli                               8.3.26

@ngtools/webpack                           8.3.26

@nguniversal/common                        8.1.0

@nguniversal/express-engine                8.2.6

@nguniversal/module-map-ngfactory-loader   8.2.6

@schematics/angular                        8.3.26

@schematics/update                         0.803.26

rxjs                                       6.4.0

typescript                                 3.5.3

webpack                                    4.39.2

C:\Users\vedic\angular-twilio-authy>ng run build:prod