Pro Tools 12 why can't I open the created song?

[Huikawai]

Pro Tools 12 why can't I open the created song, the music content includes midi track and audio track

I finished the piano with komplete 12 ultimate. I have already saved it, but I can’t open the record of the production the next day at work. I only open the record of komplete 12 that was not recorded earlier. What's the problem, please?Where can I retrieve the record of the previous midi?

Text content：

不能完成您的請求，因為Assertion in“Volumes / Development / 194038 / ProTools / App / PtSess / PtSess_RunTime.cpp”，line 23780。 （Use the Copy button to copy this message to the clipboard。）轉換時MIDI Playlists。