Edit Error Message For Channels Marked Dead During Sorting

[22AviPatel]

Error Message:

In [11]: dat.sort_spikes(0)                                                     
---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
<ipython-input-11-62e03d9064c9> in <module>
----> 1 dat.sort_spikes(0)

~/conda/envs/blechpy/lib/python3.7/site-packages/blechpy/datastructures/dataset.py in sort_spikes(self, electrode, shell)
    928             self.cleanup_clustering()
    929 
--> 930         sorter = clust.SpikeSorter(self.root_dir, electrode=electrode, shell=shell)
    931         if not shell:
    932             root, sorting_GUI = ssg.launch_sorter_GUI(sorter)

~/conda/envs/blechpy/lib/python3.7/site-packages/blechpy/analysis/blech_clustering.py in __init__(self, rec_dirs, electrode, clustering_dir, shell)
   1019         self.clustering_dir = clustering_dir
   1020         try:
-> 1021             clust = BlechClust(rec_dirs, electrode, out_dir = clustering_dir, no_write=True)
   1022         except FileNotFoundError:
   1023             clust = None

~/conda/envs/blechpy/lib/python3.7/site-packages/blechpy/analysis/blech_clustering.py in __init__(self, rec_dirs, electrode, out_dir, params, overwrite, no_write, n_pc, data_transform)
    674                        'rec_key': key_file, 'clustering_results': results_file}
    675         self.params = params
--> 676         self._load_existsing_data()
    677 
    678         if self._rec_key is None and not no_write:

~/conda/envs/blechpy/lib/python3.7/site-packages/blechpy/analysis/blech_clustering.py in _load_existsing_data(self)
    702         if params is None and not file_check['params']:
    703             raise ValueError(('Params file does not exists at %s. Must provide'
--> 704                               ' clustering parameters.') % self._files['params'])
    705         elif params is not None:
    706             self.params['max_clusters'] = params['clustering_params']['Max Number of Clusters']

ValueError: Params file does not exists at /media/senecascott/Samsung_T51/taste_experience_resorts/DS49/DS49_spont_taste_221013_161008/BlechClust/electrode_0/BlechClust_params.json. Must provide clustering parameters.

This error message is not friendly and should be replaced that directs the user to move onto the next channel.