My site is return this error when acessing the URl

[Klausfh]

Hi everyone.
can anyone help me out to clarify why my site is showing this error, when i try to enter it? The URL is www.totalsteam.dk

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[yasar]

your site showing very well , i think you fixed that issue, how do you solve that issues.

[Klausfh]

your site showing very well , i think you fixed that issue, how do you solve that issues.

I did a recovery of the site :/

Now im getting this error, when im trying to create a configurable product:

SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '0' for key 'PRIMARY', query was: INSERT INTO `cataloginventory_stock_item` (`product_id`, `stock_id`, `qty`, `use_config_min_qty`, `is_qty_decimal`, `use_config_backorders`, `use_config_min_sale_qty`, `use_config_max_sale_qty`, `is_in_stock`, `low_stock_date`, `use_config_notify_stock_qty`, `use_config_manage_stock`, `stock_status_changed_auto`, `use_config_qty_increments`, `use_config_enable_qty_inc`, `is_decimal_divided`) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)

Any ideas how to solve this?