appadmin.py errors

Error ticket for "Edgeone"
Ticket ID
127.0.0.1.2019-01-24.08-53-55.46f4b152-9921-4f2b-8bf4-1570640eef82

<class 'ImportError'> (ImportError("Cannot import module 'applications.Edgeone.modules.cStringIO'",), <traceback object at 0x7fafca84e5c8>)
Version
web2py™   Version 2.17.2-stable+timestamp.2018.10.06.18.54.02
Traceback
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Traceback (most recent call last):
  File "/home/blackpanther/web2py/gluon/custom_import.py", line 77, in custom_importer
    return NATIVE_IMPORTER(oname, globals, locals, fromlist, level)
ModuleNotFoundError: No module named 'cStringIO'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/blackpanther/web2py/gluon/custom_import.py", line 90, in custom_importer
    result = result or sys.modules[modules_prefix+'.'+itemname]
KeyError: 'applications.Edgeone.modules.cStringIO'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/blackpanther/web2py/gluon/custom_import.py", line 92, in custom_importer
    raise ImportError('Cannot import module %s' % str(e))
ImportError: Cannot import module 'applications.Edgeone.modules.cStringIO'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/blackpanther/web2py/gluon/custom_import.py", line 102, in custom_importer
    return NATIVE_IMPORTER(name, globals, locals, fromlist, level)
ModuleNotFoundError: No module named 'cStringIO'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/blackpanther/web2py/gluon/restricted.py", line 219, in restricted
    exec(ccode, environment)
  File "/home/blackpanther/web2py/applications/Edgeone/controllers/appadmin.py", line 729, in <module>
  File "/home/blackpanther/web2py/applications/Edgeone/controllers/appadmin.py", line 696, in _TEST
  File "/home/blackpanther/web2py/gluon/custom_import.py", line 104, in custom_importer
    raise ImportError(e1, import_tb)  # there an import error in the module
ImportError: (ImportError("Cannot import module 'applications.Edgeone.modules.cStringIO'",), <traceback object at 0x7fafca84e5c8>)
In file: /home/blackpanther/web2py/applications/Edgeone/controllers/appadmin.py
1.
<code object <module> at 0x7fafca8b80c0, file "/home/blackpanther/web2py/applications/Edgeone/controllers/appadmin.py", line 7>