How did you resolve this issue? I'm getting the same error on 6.5.8 Publish SPA29.06.2021 05:25:42.212 *ERROR* [103.43.114.129 [1624944342198] GET /content/aida/de/route-campaign.html HTTP/1.1] com.adobe.aem.spa.project.core.internal.impl.utils.HierarchyUtils SPA root page not found, returning null