These are the changes of ARK: Survival Evolved’s Patch 183.1, grouped into categories for clarity. If not otherwise indicated, they’re quoted from the relevant Steam Thread.

Bugfixes

• Fixed servers and clients not being able to load into the world without existing savedata present
• Fixed clients not seeing correct item counts on the Repair Cost tooltip when items are in a remote inventory

(Original Announcement on Steam)

Here are the patchnotes of the previous patch (183.0)