的web2py UnpicklingError

Question

正在此web2py的錯誤在Ubuntu：

Traceback (most recent call last): 
    File "/home/mwk/web2py/gluon/restricted.py", line 227, in restricted 
    exec ccode in environment 
    File "/home/mwk/web2py/applications/britamintell/models/db2.py", line 15, in <module> 
    auth.signature) 
    File "/home/mwk/web2py/gluon/packages/dal/pydal/base.py", line 834, in define_table 
    table = self.lazy_define_table(tablename,*fields,**args) 
    File "/home/mwk/web2py/gluon/packages/dal/pydal/base.py", line 873, in lazy_define_table 
    polymodel=polymodel) 
    File "/home/mwk/web2py/gluon/packages/dal/pydal/adapters/base.py", line 500, in create_table 
    sql_fields_old = pickle.load(tfile) 
UnpicklingError: invalid load key, '�'. 

這是什麼？如何解決？

Answer 1

沒有太多關於你想要做什麼的信息。但是，我想象你正在嘗試遷移數據庫。 如果您使用MYSQL作爲您的BBDD後端，您可以嘗試將字符串字段的長度更改爲「length = 255」。

而且似乎一個奇怪的卡拉科特在表/字段名