I guess so.
Do you use a microSD card, and if so, did you set it up as additional Internal Storage?
Here’s some more from Google …
[Taking out an SD card set up as Internal Storage helped.] (https://androidforums.com/threads/twrp-stuck-on-twrp-splash-screen.1047484/) (Edit: Is it just me or does this sound kind of dangerous for data in Internal Storage?)