After Effects error 33:4 ( missing data in file )

[xremy]

hi i'm sort of new to after effects to play around with graphics and visual effects . 

just yesterday i finished up a project and left my laptop for a while only to return the next day later with a project only opening to an error

( 33:4 missing data in file ) 

i've done a bit of research and many people say this could be due to rotobrush/scope . but in this project that effect was not used at all. 

any ideas to help?! this project is important to me /:

if it helps i'm currently using the 2021 version (18.0.1) and i use windows 10 with only 4gb ( yes i know that's a little amount but it works for me, this project was only 8.9mb )

[xremy]

sorry i meant 4gb RAM

[LinSims]

Let me move this to the After Effects forum for you, which is the appropriate forum for your question.

The Using the Community forum is for help in using the Adobe Support Community forums, not for help with specific programs. Product questions should be posted in the associated product community.