errors in the selected datapacks prevented the world from loading apear even when there are no datapacks folder

for some unknow reason I was playing on my modded it was forge not fabric minecraft world but i wanted to add more mods which i was looking to just add world edit so i left the game rejoined with the new mods  and bam errors in the selected datapacks prevented the world from loading apeared and i clicked safe mode it did not work it gave me another error and i click return to title screen and it worked