Errors in currently selected data packs prevented the world from loading

[elielieli]

I have encountered an error where it says "Errors in currently selected data packs prevented the world from loading" and it gives me two options safe mode and back to title screen when I click safe mode it does absolutely nothing. I saw this same problem elsewhere but couldn't find out what the problem was based on that. Latest log is below, pasted in a google doc cause I could not get a file uploaded to this.

latest log

Thank you in advance, sorry if I posted this wrong.

 

[elielieli]

hope this is right sorry about that This is a custom modpack in 1.16.5 by the way

[elielieli]

update I removed advanced rocketry but had the same problem. Linked an updated log. Thank you again for your help so far

[elielieli]

After I loaded safe mode, it functioned normally.