eccube-2.13.3
PHP Version 5.3.3
MySQL 5.5.40
エックスサーバー

今日いきなり商品マスター商品の規格を編集しようとするとページがフリーズします。
どなたかわかる方どうかお願い致します。

エラーログは以下です。

FFatal error(E_USER_ERROR): DB処理でエラーが発生しました。
SQL: [PREPARE mdb2_statement_mysql_768197f58886c0b99cc2506a395295201912ea6ff66 FROM 'INSERT INTO dtb_products_class(classcategory_id1,classcategory_id2,product_code,stock,price01,product_type_id,down_filename,down_realfilename,product_id,sale_limit,deliv_fee,point_rate,stock_unlimited,price02,creator_id,update_date,del_flg,create_date,product_class_id) SELECT ?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,CURRENT_TIMESTAMP,?,CURRENT_TIMESTAMP,?']
PlaceHolder: [array (
0 => NULL,
1 => NULL,
2 => NULL,
3 => NULL,
4 => NULL,
5 => 0,
6 => NULL,
7 => '',
8 => '159',
9 => NULL,
10 => NULL,
11 => '0',
12 => 0,
13 => 0,
14 => '3',
15 => 1,
16 => '271155',
)]
MDB2 Error: constraint violation
_doQuery: [Error message: Could not execute statement]
[Last executed query: EXECUTE mdb2_statement_mysql_768197f58886c0b99cc2506a395295201912ea6ff66 USING @0, @1, @2, @3, @4, @5, @6, @7, @8, @9, @10, @11, @12, @13, @14, @15, @16]
[Native code: 1062]
[Native message: Duplicate entry '159-0-0' for key 'product_id']
on [/home/exsample/exsample.com/public_html/data/class/SC_Query.php(1095)] from 219.121.85.168
login_id = cabron(1)[fe1594b2bf05ef679846304f8f5b9a59]
/home/exsample/exsample.com/public_html/admin/products/product_class.php(29): LC_Page_Admin_Products_ProductClass_Ex->process
/home/exsample/exsample.com/public_html/data/class_extends/page_extends/admin/products/LC_Page_Admin_Products_ProductClass_Ex.php(54): LC_Page_Admin_Products_ProductClass->process
/home/exsample/exsample.com/public_html/data/class/pages/admin/products/LC_Page_Admin_Products_ProductClass.php(61): LC_Page_Admin_Products_ProductClass->action
/home/exsample/exsample.com/public_html/data/class/pages/admin/products/LC_Page_Admin_Products_ProductClass.php(144): LC_Page_Admin_Products_ProductClass->registerProductClass
/home/exsample/exsample.com/public_html/data/class/pages/admin/products/LC_Page_Admin_Products_ProductClass.php(279): SC_Query->insert
/home/exsample/exsample.com/public_html/data/class/SC_Query.php(575): SC_Query->query
/home/exsample/exsample.com/public_html/data/class/SC_Query.php(873): SC_Query->execute
/home/exsample/exsample.com/public_html/data/class/SC_Query.php(1056): SC_Query->error
/home/exsample/exsample.com/public_html/data/class/SC_Query.php(1095): trigger_error


またサーバーのエラーログは
PHP Warning: Maximum number of allowable file uploads has been exceeded in Unknown on line 0, referer: http://www.exsample.com/admin/products/product_class.php

となっていました。