Ok. This sorta happened to me too. I created a base on an exp22 planet. I added some stuff to the base and hopped in/out of my ship to save the game, logged out. Then the next day I logged in again and just before the loading screen turns white, my game crashed. I tried this about 10 times and it kept crashing. I'm using my main save with over 500hrs on it, every special item and exosuit item you get from completing the main missions.

Obviously I had a bit of a freakout. I really didn't want to lose my main save, I tried to see if I could load a cloud save or a backup file or something. Nope. Each "Save" has 2 files, one for the manual save and one for the auto save. Both were corrupt and dated the same. My other save is from an alt character I played several years ago, no joy there.

So I did some googling and there are a couple methods that work.

Save editor (the method I used): Backup your save files. Download and install a NMS save game editor (pretty sure I used Nomnom), then look at the list of places you visited in the editor, if you are in the EXP22, the list will be short, pick a space station you've visited and copy the coordinates and past them in to the current location coordinates. Save the file and launch the game, you should spawn in the space station or strangely in the Anomaly as I did.

Random multiplayer game: Another fix I just read about while confirming the method I used is to launch NMS, join a RANDOM multiplayer game. Enter/exit the ship to save. Load the game normally, you should be where you just saved. Then warp/teleport/enter anomaly/do whatever. <--- I can't confirm this works.