# Active\_record: wrong number of arguments (1 for 0)

**URL:** <https://www.ruby-forum.com/t/active-record-wrong-number-of-arguments-1-for-0/153455>\
**Category:** Rails\
**Created:** [November 17, 2008, 2:45pm UTC](https://www.ruby-forum.com/t/active-record-wrong-number-of-arguments-1-for-0/153455 "2008-11-17T14:45:24Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![josh](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/45deac/32.png) [@josh](https://www.ruby-forum.com/u/josh)\
**Post date:** [November 17, 2008, 2:45pm UTC](https://www.ruby-forum.com/t/active-record-wrong-number-of-arguments-1-for-0/153455/1 "2008-11-17T14:45:24Z")

</div>

Hi all

I’m trying to deploy an older Rails app to a new hoster. I uploaded  
everything, specified the db connection data and started the app.

Sadly I’m getting the following error:

ArgumentError: wrong number of arguments (1 for 0)  
from  
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active\_record/vendor/mysql.rb:551:in  
`initialize' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/vendor/mysql.rb:551:in`new’  
from  
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active\_record/vendor/mysql.rb:551:in  
`scramble41' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/vendor/mysql.rb:141:in`real\_connect’  
from  
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active\_record/connection\_adapters/mysql\_adapter.rb:331:in  
`connect' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb:88:in`initialize’  
from  
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active\_record/connection\_adapters/mysql\_adapter.rb:37:in  
`new' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb:37:in`mysql\_connection’  
from  
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active\_record/connection\_adapters/abstract/connection\_specification.rb:251:in  
`send' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb:251:in`connection\_without\_query\_cache=’  
from  
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active\_record/query\_cache.rb:54:in  
`connection=' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/connection_adapters/abstract/connection_specification.rb:220:in`retrieve\_connection’  
from  
./script/…/config/…/config/…/vendor/rails/activerecord/lib/active\_record/connection\_adapters/abstract/connection\_specification.rb:78:in  
`connection' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/base.rb:679:in`table\_exists?’  
from  
./script/…/config/…/config/…/vendor/plugins/schema\_validations/lib/red\_hill\_consulting/schema\_validations.rb:29:in  
`inherited' from ./script/../config/../config/../vendor/rails/activerecord/lib/active_record/base.rb:253:in`inherited’  
from ./script/…/config/…/config/…/app/models/kurs.rb:1  
from /usr/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
`gem_original_require' from /usr/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in`require’  
from  
./script/…/config/…/config/…/vendor/rails/activerecord/lib/…/…/activesupport/lib/active\_support/dependencies.rb:147:in  
`require' from ./script/../config/../config/../vendor/rails/activerecord/lib/../../activesupport/lib/active_support/dependencies.rb:65:in`require\_or\_load’  
from  
./script/…/config/…/config/…/vendor/rails/activerecord/lib/…/…/activesupport/lib/active\_support/dependencies.rb:30:in  
`depend_on' from ./script/../config/../config/../vendor/rails/activerecord/lib/../../activesupport/lib/active_support/dependencies.rb:85:in`require\_dependency’  
from  
./script/…/config/…/config/…/vendor/rails/activerecord/lib/…/…/activesupport/lib/active\_support/dependencies.rb:98:in  
`const_missing' from ./script/../config/../config/../vendor/rails/activerecord/lib/../../activesupport/lib/active_support/dependencies.rb:131:in`const\_missing’  
from (irb):1\>\>

Can anyone tell me what the problem could be?

Thanks,  
Josh