Install-PnPApp writes error but does not throw error, so can't trap

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SharePointPnPPowerShellOnline\3.11.1907.0\SharePointPnPPowerShellOnline.psd1

Environment

[x ] Office 365 / SharePoint Online [ ] SharePoint 2016 [ ] SharePoint 2013

If SharePoint on-premises, what's exact CU version:

Expected or Desired Behavior

Install-PnPApp should throw error on error

Observed Behavior

Install-PnPApp will write error but not throw error

Steps to Reproduce

Install-PnPApp on site with app already installed

Submission Guidelines

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