Your exposure indicator on the left side of the screen shows several stops underexposed. If you’re using a manual exposure try to adjust your settings.
It is also possible that you have accidentally adjusted the exposure compensation dial and have it set to under expose by a few stops. I noticed it is under the cage and could have been adjusted without you realizing it.
Hope this helps,
David
HaithamXT4Lover reacted to dward in Dark view/screen when I switch to video recording on XT4