Keep looping to input configuration files while running crosscorrelation

[SorawatSiangpipop]

Dear seismic-noise-tomography's developer and whom might be concerned
I'm a Master's Degree student from Chiang Mai University, Thailand.
I'm interested in crosscorrelation tomography's field.
Moreover, your work drew me to these programs.

Lately, I was testing on running the crosscorrelation program.
I've found that it keep running on Select a configuration files as the attached picture.

Therefore, I'm writing to kindly ask if you could suggest me that what's going on.

In details,
compiler PyCharm Community Edition 2020.1.2 x64
python 2.7.15
obspy 1.0.2
numpy 1.15.4
scipy 1.2.1
matplotlib 2.2.5
pyproj 1.9.6

,Kindly Regards.