Bitwarden->Authpass Migration help : Error Dialog: Unable to open File

How can I export Bitwarden to Authpass? I didn’t know about Authpass and I’ve been using Bitwarden for years!

title:Unable to open File
content: Unknown error while trying to open file. KdbxInvalidFileStructure{Unsupported file structure. 0x20200a7b, 0x636e6522}
OS: windows “Windows 10 Home” 10.0 (Build 19043)
App Info: AuthPass (1.9.4+1872) [design.codeux.authpass.windows]
Device: {systemMemoryInMegabytes: 16384}