Issue Help, error saving next day

remi44

Newcomer
Hello. I installed a new NPC "Yumii" and wanted to marry her. On the wedding day the game throws an error. Please help.
I attached a file with an error. What could it be and how to fix it??? I just spent a lot of time on that farm and I don't want to lose my progress.

[14:22:28 ERROR game] An error occurred in the base update loop: System.Exception: Error on new day:
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Microsoft.Xna.Framework.Content.ContentLoadException: The content file was not found.
---> FileNotFoundException: Could not find file 'c:\program files (x86)\steam\steamapps\common\Stardew Valley\Content\Maps\yumii_Yumii_SpousePatio.xnb'.
File name: 'c:\program files (x86)\steam\steamapps\common\Stardew Valley\Content\Maps\yumii_Yumii_SpousePatio.xnb'
at Microsoft.Win32.SafeHandles.SafeFileHandle.CreateFile(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options)
at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize)
at
 
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