Helping the Jar find light is the first quest you'll encounter in Clair Obscur: Expedition 33—in fact, it's unavoidable. While battling your way through the first Spring Meadows area, you'll encounter this strange monster on the main path and it'll trigger a cutscene. The Jar is unable to move without light, and the lamp he's carrying isn't lit.

If you want to help him, you'll have to find a way to bring him light and set his lamppost glowing again. Since there are few reasons to return to this area, and the game doesn't have a quest log, it's easy to forget the Jar even exists. Still, if you get this done early, you'll get a nice little item bonus that'll help in all your future battles.

To show the Jar light, you first need to acquire the resin quest item, which is also located in the Spring Meadows area. From where you find the Jar and the Expedition 81 rest point, you need to:

Continue along the main route into the area with the patrolling enemies and white flowers, taking the left path that descends to where you can see a bridge

Rather than taking a left to cross the bridge, take the righthand path going under it

As you pass under the bridge, you'll spot a bunch of crates further ahead of you by some tree roots on the other side—smash these using free aim to find the resin item.