You can't dig a grave for your parents.

[wito9]

Hi, I need some advice regarding the quest at the beginning of the game.
The game doesn't offer me the option to dig a grave for my parents under the linden tree.
I tried loading an older save and nothing. I've completed all the quests and it still won't let me finish this quest.
Sometimes the game crashes when I want to pick up an herb, if it has nothing to do with it.
Thank you for all the answers and advice

[Judeo-communism]

Make sure the Spade is in your inventory and you're actually on the quest to do the dig

[wito9]

Now that I have a shovel and the task is to dig a grave for my parents, I don't know what else I could have forgotten.
Thank you

[Khalunka]

"Sometimes the game crashes when I want to pick up an herb, if it has nothing to do with it."

That's not supposed to happen. Validate your files and check if your computer meet the requeriments, mess a little bit with the settings so you can run it without problems (specially memory-wise).

About the quest, you follow the dog's barks and meet a NPC, which after some interaction you can get the Spade nearby. With Spade in your inventory and the quest in that proper step, you will goto your former house (now burned and destroyed) and on it's side will be a different tree, in which nearby it you will have a prompt to press E to Dig. It can envolve in walking around a little bit for the prompt to appear.

[waytooslow]

i have the spade and its my only quest. still nothing. can't even equip the spade. been around the tree a dozen times spamming E and nothing

[Judeo-communism]

You don't equip the Spade. You just need to have it in your inventory (and not the horse's inventory, for later). Once it's in your inventory and the Quest Log changes to dig, you need to go to the specific spot. You'll know it by hovering your mouse at the correct spot on the ground and seeing an E action that says "start digging." This is teaching you how to do treasure hunt maps later, where you'll oftentimes need to dig just like this at very specific locations.

[Bandy]

If you have steam verified files and nothing else works, then I suggest you backup your save files folder elsewhere and reinstall the game and play forward from the very beginning.

Yes, not what you want to hear but give it a try. Often at game start a bug can get into the save file and carry forward for the whole game, only revealing itself in certain contexts. I had a non-game-breaking script bug happen in my first play through, but did not reappear when I restarted the game. YMMV...

At least give it a try, remember to back up your save folder, right?