Galaxy S9 boots into TWRP

Hello everybody,
starting my phone this morning it got stuck on the TWRP-screen and I don´t know
what to do, to get it to run again.
Please help,
Marcus

Regain your privacy! Adopt /e/ the unGoogled mobile OS and online servicesphone

Have you tried to simply Reboot ?

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It is a old version of TWRP, do you need to update it ? Or installing the e-recovery instead ?

Hi Piero,
reboot did not work this morning,
but I rebooted again just now and the phone started OK!
Thank you!