I'm pulling my hairs out over this error, it occurred from no where & I 
cant make sense of it because i had not made any updates to my code & got 
this error

Here is the traceback if anyone can figure something out please help me, 
thank you in advance.

Ticket ID 

127.0.0.1.2018-11-12.20-51-42.a137b4bb-0440-419f-9b79-52ee83d1d6dc
<type 'exceptions.KeyError'> '<'
Version
web2py™ Version 2.17.2-stable+timestamp.2018.10.06.18.54.02
Python Python 2.7.9: C:\warmhandssingleUsers\web2py\web2py\web2py.exe (
prefix: )

Traceback

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Traceback (most recent call last):
  File "C:\warmhandssingleUsers\web2py\web2py\gluon\restricted.py", line 219, 
in restricted
    exec(ccode, environment)
  File 
"C:/warmhandssingleUsers/web2py/web2py/applications/Hotel_Version/models/dbmanagement.py"
 
<http://127.0.0.1:8000/admin/default/edit/Hotel_Version/models/dbmanagement.py>,
 line 51, in <module>
    format='%(Surname)s, %(Name)s')
  File 
"C:\warmhandssingleUsers\web2py\web2py\gluon\packages\dal\pydal\base.py", line 
590, in define_table
    table = self.lazy_define_table(tablename, *fields, **kwargs)
  File 
"C:\warmhandssingleUsers\web2py\web2py\gluon\packages\dal\pydal\base.py", line 
624, in lazy_define_table
    polymodel=polymodel)
  File 
"C:\warmhandssingleUsers\web2py\web2py\gluon\packages\dal\pydal\adapters\base.py",
 line 798, in create_table
    return self.migrator.create_table(*args, **kwargs)
  File 
"C:\warmhandssingleUsers\web2py\web2py\gluon\packages\dal\pydal\migrator.py", 
line 296, in create_table
    sql_fields_old = pickle.load(tfile)
  File "pickle.py", line 1378, in load
  File "pickle.py", line 858, in load
KeyError: '<'

-- 
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- http://github.com/web2py/web2py (Source code)
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