Please read the forum link for the detailed information about your query, https://www.axcrypt.net/forums/topic/error-inflating-invalid-stored-block-lengths/#post-7334 . In that forum, our lead developer Svante had explained the issue.
After reading the forum response, please read the below.
AxCrypt app does have a verify file functionality in the latest version. You can use the same to verify the file structure.
First, you have to enable debug menu to use the verify file functionality via File | Options | enable Debug.
Then use the Check File submenu from the Debug menu to verify the file structure.
You can also try the Try Broken File submenu from the Debug menu, to recover the corrupted file.