TypeError: string indices must be integers in preprocess.py

[imransalam]

Preparing training ...
Building Training...
Traceback (most recent call last):
  File "preprocess.py", line 71, in <module>
    main()
  File "preprocess.py", line 49, in main
    train = table.IO.TableDataset(opt.train_anno, fields, opt, True)
  File "/home/shahqaan_qasim/imran/nl2sql/src/table/IO.py", line 106, in __init__
    js_list = read_anno_json(anno)
  File "/home/shahqaan_qasim/imran/nl2sql/src/table/IO.py", line 82, in read_anno_json
    cond_list = list(enumerate(js['query']['conds']))
TypeError: string indices must be integers

After following the issue #7 , I copied train.jsonl from data to annotated. And now it gives me the above error.