bug on the t21-gempy workshop notebook

[leomiquelutti]

I am trying to reproduce the t21-gempy workshop notebook.

When I try to execute the following cell

wts = sb.reader.wells.WellyToSubsurfaceHelper(collar_df=collar, survey_df=survey, lith_df=lith)

I get the following error:

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
~\AppData\Local\Temp/ipykernel_25240/482279566.py in <module>
----> 1 wts = sb.reader.wells.WellyToSubsurfaceHelper(collar_df=collar, survey_df=survey, lith_df=lith)

~\miniconda3\envs\gempy\lib\site-packages\subsurface\reader\wells\pandas_to_welly.py in __init__(self, collar_df, survey_df, lith_df, attrib_dfs)
     52 
     53         if collar_df is not None: self.add_datum(collar_df)
---> 54         if survey_df is not None: self.add_deviation(survey_df)
     55         if lith_df is not None:  self.add_striplog(lith_df)
     56 

~\miniconda3\envs\gempy\lib\site-packages\subsurface\reader\wells\pandas_to_welly.py in add_deviation(self, deviations, td, method, update_deviation, azimuth_datum)
    173         for b in unique_borehole:
    174             w = self.p.get_well(b)
--> 175             w.location.add_deviation(deviations.loc[[b], ['md', 'inc', 'azi']],
    176                                      td=td,
    177                                      method=method,

~\miniconda3\envs\gempy\lib\site-packages\welly\location.py in add_deviation(self, deviation, td, method, update_deviation, azimuth_datum, course_length)
    242             None. Adds the position log to `well.location` in place.
    243         """
--> 244         dev_new, pos, dog = compute_position_log(deviation,
    245                                                  td,
    246                                                  method,

~\miniconda3\envs\gempy\lib\site-packages\welly\tools.py in compute_position_log(deviation, td, method, azimuth_datum, course_length)
     54 
     55     # Make wellpathpy deviation object.
---> 56     dev = wp.deviation(*deviation.T)
     57 
     58     # Compute position log.

~\miniconda3\envs\gempy\lib\site-packages\wellpathpy\position_log.py in __init__(self, md, inc, azi)
     23     """
     24     def __init__(self, md, inc, azi):
---> 25         md, inc, azi = checkarrays(md, inc, azi)
     26         self.md = np.copy(md)
     27         self.inc = np.copy(inc)

~\miniconda3\envs\gempy\lib\site-packages\wellpathpy\checkarrays.py in checkarrays(md, inc, azi)
     57 
     58     if not np.all(md[1:] > md[:-1]):
---> 59         raise ValueError('md must have strictly increasing values')
     60 
     61     return md, inc, azi

ValueError: md must have strictly increasing values

Any ideas on how to solve it, please?