Loop doesn't work

[_PAPER_PLANE_]

This script was found here, and I have made some slight modifications on my own, which do not affect its functionality. However, after updating to skript 2.8.0, the loop section seems unresponsive. I've checked the update log, but I still can't figure out what the issue is.
No error message.

Spoiler

function chain(b: block, n: integer):
    wait 1 tick
    {_n} is less than 50
    add 1 to {_n}
    loop blocks in radius 2 around {_b}:
        loop-block is any log
        loop blocks above loop-block:
            loop-block-2 is air:
                block above loop-block-2 is air
                exit 1 loop
            exit 1 loop
        loop blocks above loop-block:
            loop-block-2 is any leaves
            chain(loop-block-1, {_n})
            break loop-block-1
            wait 10 tick
            
on break of any log:
    name of tool is "special axe"
    loop blocks above event-block:
        loop-block is any leaves:
            send event-location to player
            loop all blocks in radius 2 of loop-block:
                loop-block-2 is any leaves
                add 1 to {_l}
                send {_l} to player
            {_l} > 7
            set {_tree} to true
    {_tree} is true:
        chain(event-block, 0)

 

[Shroob]

just.... use the plugin instead of a 6 year old script

 

[MinecraftMan1013]

send code

 

[_PAPER_PLANE_]

Underneath this post, someone updated a script in August 2023, and I used it. (here) Also, I already posted code in the comments with spoiler.

 

[MinecraftMan1013]

mb, i didn't see it since im on the phone. which loop isn't working, and have you tried debugging?

 

[_PAPER_PLANE_]

Yes, I have debugged it, and it fails to pass on first loop.

loop blocks in radius 2 around {_b}:

and

loop blocks above event-block: