E:\appinventor-sources\appinventor>gcloud app deploy --project=appcentral-311908 appengine\build\war
WARNING: and elements in appengine-web.xml are not respected
Services to deploy:
Beginning deployment of service [default]...
ERROR: (gcloud.app.deploy) Cannot upload file [C:\Users\sathy\AppData\Local\Temp\tmpr4q41agr\tmpkofl1vqg\ode/CFD64BD35BB69602F334A1A00AEB5EE1.cache.js], which has size [34983220] (greater than maximum allowed size of [33554432]). Please delete the file or add to the skip_files entry in your application .yaml file and try again.
I ran into this and after rectifying this error, I should run this command gcloud app deploy --project=appcentral-311908 appengine\build\war again right?
Yes, once you enable the Google Cloud Build API you should be able to proceed. You only need to do this once per App Engine project (this isn't specific to App Inventor--it's how Google App Engine / Google Cloud works)