I am using android studio 3.1.4.
Error:Could not find intellij-core.jar (com.android.tools.external.com-intellij:intellij-core:26.0.1). Searched in the following loc
This issue is being tracked on Jira
A break down of the issue
Basically there was a problem uploading Google jars to jcenter and it is causing builds to fail.
The fix
Builds will work if we put the google maven repo ahead of jcenter.
On the 18th July the issue should have been addressed in the release of cordova-android 7.1.1, see change log here
The fix however did not work in all cases evidently.
A new fix has been made so expect this to be ready in 7.1.2, until then, remember to swap the ordering every time you remove and re-add the platform.