Problem Updating kibana 8.19 -> 9.4.1

Elastic Stack Kibana
1

We have been updating our cluster from 8.19 to 9.4.1, we finished all the nodes except the kibana. when updating we saw the service stuck on [plugins.screenshotting.chromium] Browser executable: /usr/share/kibana/node_modules/@kbn/screenshotting-plugin/chromium/headless_shell-linux_x64/headless_shell.

when adding the setting xpack.screenshotting.enabled: false its stuck on starting saved objects migrations.
we kept all ymls the same on all the nodes.

2

We ended up finding out that shard allocation was not set to all so it fell every time