I'm not able to upgfrade OP from version 7 to 8 due to migration issues.

StandardError: An error has occurred, this and all later migrations canceled:

It appears you are migrating from an incompatible version of ChiliProject. Yourdatabase has only some migrations from ChiliProject < v2.4.0 Please update your database to the schema of ChiliProject v2.4.0 and run the OpenProject migrations again. The following migrations are missing: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 14, 18, 21, 28, 30, 31, 32, 33, 34 ...

How I can update the database to the schema of ChiliProject v2.4.0?

All previous major upgrades from OP are done without errors.