Accidentally changed keystore format

Hello, I am a newbie, I was trying to make changes to improve performance of my webView app on Android Studio, however when I was trying to start a new project in new window I guess I must have open the jks. file rather than my project, it showed dialogue for different encoding language like UT8 default windows etc. I made some changes which I wasn’t aware, as a result

A failure occurred while executing$ActionFacade
> Failed to read key key0 from store “C:\Users\jaske.AndroidStudio4.0\The(my app name) edited.jks”: Invalid keystore format

Please help, I had put a lot of efforts and now just disappointed