Generally, this error means that you have installed the Random Portrait mod more than once at the same time, so the duplicate code causes errors. This can happen if Aric's mod is re-installed without removing all the other mods, as the act of deleting the backup folder causes those mods to become part of the default scripts. The simple fix would be to un-apply the Random Portrait mod to see if it remains installed and play like that. Otherwise you will need to start a fresh Strive program folder and reinstall your mods.