Can't open CTF map, Post Tag is not valid. File might be corrupted

I’ve been building a CTF map to put on my portfolio that I am to show this wednsday. After mirroring the base and the terrain I tried to build. When it got to lighting it said something about “could not kick off swarm”.
I tried restarting both the computer and the program but I couldn’t open the file (which I named v06) and not even v05 or v04 works now.
I get the error message:

LogLinker:Warning: Unable to load package (…/…/…/UnrealTournament/Content/CTF-CarnageKeep-v06.umap). Post Tag is not valid. File might be corrupted.
LogUObjectGlobals:Warning: Failed to find object ‘Object /Game/CTF-CarnageKeep-v06.CTF-CarnageKeep-v06’

This is such bad timing and I really hope to get my project up and running again.
Thanks in advance,
Michael

First close the editor. Then navigate to that map in content folder through explorer and delete it.
After delete take a copy of autosaved map in saved folder and paste it in content folder.

Thank you! Worked like a charm.

Your My Hero sir , my life saved

Where can I find the autosave map, please tell me I have this same issue ?

WOW, THANKYOU!

Saved\Autosaves\

Greetings @LutyO

Welcome to the Unreal Engine Forums! The solution above addressed the issue you were looking into as well, I presume?

Thank you so much, I almost lost 2 days of work but this thread helped

thank you so much for this help. when i open my level it did’t work , I was literally cry for this because i was made this project for my father birthday celebration. but right now the problem is resolved thank you again for this help.

you saved me!!!