stuck on fantastic voyage quest

Hello i'm a new player who started actively playing not too long ago. I was recently doing the quest a vantastic voyage and the quest bugged at the part where you use the explosive on the boulder. However i lost the tnt somehow (i have no clue how i lost the tnt) so i cant blow up the boulder. I have tried getting the ingredients again but the crafting table says i already have it and so it doesnt let me craft another one. Is there anything I can do to fix the quest or can i just never complete it now?

 

/fixquests and if doesnt work you might not able to do it.

 

Nope i got some other quest items but not the tnt i needed. Thanks for the help tho

 

Try going back to the boulder and interacting with it?

 

if u need to get rid of the ones u dont need just fill ur inventory and throw while holding it in ur cursor then leave inventory and it will delete them

 

nope it says i should place the tnt in front of it