@risko
This error is windows specific and has been discussed .
You need to figure out which working file is corrupted and delete it...
Potential candidates are:
consensus.db
nodes.json
hostdb.json
Maybe I'm mising the real one. But the consensus.db is the toughest to recreate, so you can try to delete the gateway folder, then try to start. If that does not help, delete the next one... until you have tried all but the consensus.
And, if you delete the wallet folder, you'll need to restore from seed.