Can't play or view project in Premiere Pro

[Rat5FAE]

I have been working on this project for a while and have had no issues with it until recently. Currently, if I open the project I am unable to move through the timeline without clicking and cannot see or hear my project.

 

[Ann Bens]

At present, there is an issue with nested audio, which causes strange behavior: delete from timeline or disable Show Audio Waveform.