We just released a new patch version of AiiDA, v2.8.1.
It fixes a SQLite QueryBuilder regression where filters such as {'ctime': {'in': [...]}} or {'ctime': {'!in': [...]}} with Python datetime values could fail (#7486).
Plugins that select or exclude nodes by creation or modification time work again on SQLite profiles.
It also adds a migration that downgrades a version 10 configuration schema, introduced in the upcoming v2.9.0, back to the version 9 schema used by the 2.8 series (#7417), so you can try out v2.9.0 and come back without fixing up config.json by hand.
The same fixes went out today for the 2.7 series in v2.7.4.
You can find the full list of changes in the CHANGELOG.
Happy computing!
The AiiDA team