I've found a solution For this problem. The problem was that for the 
version Web2py 2.13.4 the newrelic wasnt working. after the i removed the 
newrelic it worked for me.

On Thursday, February 4, 2016 at 6:39:03 PM UTC+1, bogu...@gmail.com wrote:
>
> Hello,
> I've the same problem with my app did you found any solution for this 
> ERROR?
> my psycopg2 version is 2.4.5 tried it with 2.6.1 same problem appears.
>
> On Tuesday, January 12, 2016 at 4:27:24 AM UTC+1, Júlia Rizza wrote:
>>
>> I have an web2py app connected with a PostgreSQL database and it's 
>> raising the following error:
>>
>> <type 'exceptions.TypeError'> must be psycopg2._psycopg.connection, not 
>> ConnectionWrapper
>>
>>
>> I couldn't figure it out. This is the traceback:
>>
>>
>> Traceback (most recent call last):
>>   File "/var/www/web2py/gluon/restricted.py", line 227, in restricted
>>     exec ccode in environment
>>   File "/var/www/web2py/applications/web2courses/models/02_menu.py" 
>> <https://juliarizza.com/admin/edit/web2courses/models/02_menu.py>, line 38, 
>> in <module>
>>     if auth.has_membership('Teacher') or auth.has_membership('Admin'):
>>   File "/var/www/web2py/gluon/tools.py", line 4350, in has_membership
>>     group_id = self.id_group(group_id)  # interpret group_id as a role
>>   File "/var/www/web2py/gluon/tools.py", line 4320, in id_group
>>     rows = self.db(self.table_group().role == role).select()
>>   File "/var/www/web2py/gluon/packages/dal/pydal/objects.py", line 2025, in 
>> select
>>     return adapter.select(self.query,fields,attributes)
>>   File "/var/www/web2py/gluon/packages/dal/pydal/adapters/base.py", line 
>> 1280, in select
>>     sql = self._select(query, fields, attributes)
>>   File "/var/www/web2py/gluon/packages/dal/pydal/adapters/base.py", line 
>> 1167, in _select
>>     sql_w = ' WHERE ' + self.expand(query) if query else ''
>>   File "/var/www/web2py/gluon/packages/dal/pydal/adapters/base.py", line 
>> 952, in expand
>>     rv = op(first, second, **optional_args)
>>   File "/var/www/web2py/gluon/packages/dal/pydal/adapters/postgres.py", line 
>> 444, in EQ
>>     eq = PostgreSQLAdapter.EQ(self, first, second)
>>   File "/var/www/web2py/gluon/packages/dal/pydal/adapters/base.py", line 
>> 846, in EQ
>>     self.expand(second, first.type))
>>   File "/var/www/web2py/gluon/packages/dal/pydal/adapters/base.py", line 
>> 962, in expand
>>     rv = self.represent(expression, field_type)
>>   File "/var/www/web2py/gluon/packages/dal/pydal/adapters/postgres.py", line 
>> 416, in represent
>>     return PostgreSQLAdapter.represent(self, obj, fieldtype)
>>   File "/var/www/web2py/gluon/packages/dal/pydal/adapters/postgres.py", line 
>> 349, in represent
>>     return BaseAdapter.represent(self, obj, fieldtype)
>>   File "/var/www/web2py/gluon/packages/dal/pydal/adapters/base.py", line 
>> 1489, in represent
>>     return self.adapt(obj)
>>   File "/var/www/web2py/gluon/packages/dal/pydal/adapters/postgres.py", line 
>> 53, in adapt
>>     adapted.prepare(self.connection)
>> TypeError: must be psycopg2._psycopg.connection, not ConnectionWrapper
>>
>>
>> Can somebody help me?
>>
>>

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