Script doesn't finish

[svlier]

I tried the script on Roam Research script but it doesn't finish. Maybe someone can help me (no coding skills).

PS C:\Users\stefa\OneDrive - Nunhems\Code Snippets\python\rj2obs-main> py r2o.py myvault.json
Pass 1: scan all pages
100%|█████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████| 1147/1147 [00:00<00:00, 23400.07it/s]
Pass 2: track blockrefs
22%|███████████████████████████████████████████▋ | 253/1147 [00:00<00:00, 15757.76it/s]
Traceback (most recent call last):
File "C:\Users\stefa\OneDrive - Nunhems\Code Snippets\python\rj2obs-main\r2o.py", line 145, in
expand_children(p, uid2block, referenced_uids)
File "C:\Users\stefa\OneDrive - Nunhems\Code Snippets\python\rj2obs-main\r2o.py", line 104, in expand_children
lines.extend(expand_children(b, uid2block, referenced_uids, level + 1))
File "C:\Users\stefa\OneDrive - Nunhems\Code Snippets\python\rj2obs-main\r2o.py", line 77, in expand_children
s = b['string']
KeyError: 'string'