Complete newbie here with Angular. But when I try to kick off the default build I get:

i [ext]: [ERR] [ERR] Error: spawn /home/reedc/my-ext-angular-app/node_modules/@sencha/cmd/dist/sencha ENOENT at _errnoException (util.js:1022:11) at Process.ChildProcess._handle.onexit (internal/child_process.js:190:19) at onErrorNT (internal/child_process.js:372:16) at _combinedTickCallback (internal/process/next_tick.js:138:11) at process._tickCallback (internal/process/next_tick.js:180:9) at Function.Module.runMain (module.js:695:11) at startup (bootstrap_node.js:188:16) at bootstrap_node.js:609:3
Not sure what the issue is.