Office 365 – SharePoint Online – SPFX issue in webpart.manifests.json – WebPart Id – String does not match the pattern of “^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$”

Office 365 - SharePoint Online - SPFX issue in webpart.manifests.json - WebPart Id - String does not match the pattern of "^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$"