Phone reboots into twrp after lineage update

I got a lineage OS update notification, clicked download, clicked install. Phone does the regular reboot into recovery, update stuff, reboot to system. Then it just keep showing the lineage boot animation for a very long time before deciding to boot back to twrp and show the home screen.

A quick google search told me that twrp might be outdated, so I used adb/fastboot to install the latest version. Update succesfull. Still reboots into twrp.

Then I tried to install manually using the install button and navigating to ‘/data/linageos_updates/linage-*.zip’.

Still having the same problem.

I’m using a oneplus3 running the latest version of lineage. (17.1 I believe)