There was an error about 'model': str' object has no attribute 'predict_proba'

[xx927]

Traceback (most recent call last):
File "", line 1, in
File "/phakinpro.py", line 112, in run_prediction
pred_proba = model.predict_proba(fp.reshape(1, -1))[:, 1]
^^^^^^^^^^^^^^^^^^^
AttributeError: 'str' object has no attribute 'predict_proba'

What can I do? Thanks very much!