Spawning enemy help

Hi guys so im trying to spawn a enemy spider at a specific location when my character overlaps with a box trigger. My problem is that when i play the game, i can see on the world outliner to the right that it does spawn yet i can not see it. Im also getting a error/warning while playing in the editor but i dont really understand where the problem is.

This is the blueprint for spawning the enemy called spider grunt.

This is the error I am getting.

If you need anymore information just let me know.

Any help would be greatly appreciated, thank you.

Ok so ive managed to get it to work if i change the location and set it to the actual box collision. So the spiders spawns in the trigger.

Any ideas why this only works when the location in set to the actual box collision? I really need the enemy to spawn in another location.
Thanks.

Post this part, where you compare integer - here is error. On your screen this part is missed.
And error is about compare integer.

Thank but i just realized what i was doing wrong. Damm i feel like an idiot.