This may be related to [Link Removed].
A packaged project will fail to run successfully if the project includes a Built-In Editor plugin and the project was packaged with the Build option set to "Never".
The packaged project does not run successfully. Looking at the log file for the project, an error similar to the following is seen: LogPluginManager: Error: Unable to load plugin 'ActorSequenceEditor'. Aborting.
The packaged project runs successfully.
Disable the plugin prior to packaging, or package once with the Build option set to "If project has code, or running a locally built editor".
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-59563 in the post.