Entering a portal to the outer end via enter pearl corrupted the world

In game playing surrounding changed to total black while entering a portal to the outer end with an ender pearl. I was kind of stucked, because the coordinates didn’t changed while moving and throwing other ender pearls didn’t work too. I tooked a screenshot. I left to figure out that the world file is kind of broken. Itˋs a now never ending loading screen. Please tell me there is a way to recover it. Month of work is lost.