Exception (Integrity constraint violation) 'yii\db\IntegrityException' with message 'SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '2-14' for key 'PRIMARY'
The SQL being executed was: INSERT INTO `user_products` (`user_id`, `product_id`, `coupon_id`) VALUES (2, 14, 67)'

in /var/www/html/amazon/vendor/yiisoft/yii2/db/Schema.php:633

Stack trace:
#0 /var/www/html/amazon/vendor/yiisoft/yii2/db/Command.php(854): yii\db\Schema->convertException(Object(PDOException), 'INSERT INTO `us...')
#1 /var/www/html/amazon/vendor/yiisoft/yii2/db/Schema.php(451): yii\db\Command->execute()
#2 /var/www/html/amazon/vendor/yiisoft/yii2/db/ActiveRecord.php(457): yii\db\Schema->insert('user_products', Array)
#3 /var/www/html/amazon/vendor/yiisoft/yii2/db/ActiveRecord.php(427): yii\db\ActiveRecord->insertInternal(NULL)
#4 /var/www/html/amazon/vendor/yiisoft/yii2/db/BaseActiveRecord.php(598): yii\db\ActiveRecord->insert(true, NULL)
#5 /var/www/html/amazon/frontend/controllers/CouponsController.php(95): yii\db\BaseActiveRecord->save()
#6 /var/www/html/amazon/frontend/controllers/CouponsController.php(45): frontend\controllers\CouponsController::createUserProduct(2, 14, 67)
#7 [internal function]: frontend\controllers\CouponsController->actionClaim('14')
#8 /var/www/html/amazon/vendor/yiisoft/yii2/base/InlineAction.php(55): call_user_func_array(Array, Array)
#9 /var/www/html/amazon/vendor/yiisoft/yii2/base/Controller.php(154): yii\base\InlineAction->runWithParams(Array)
#10 /var/www/html/amazon/vendor/yiisoft/yii2/base/Module.php(454): yii\base\Controller->runAction('claim', Array)
#11 /var/www/html/amazon/vendor/yiisoft/yii2/web/Application.php(87): yii\base\Module->runAction('coupons/claim', Array)
#12 /var/www/html/amazon/vendor/yiisoft/yii2/base/Application.php(375): yii\web\Application->handleRequest(Object(yii\web\Request))
#13 /var/www/html/amazon/frontend/web/index.php(18): yii\base\Application->run()
#14 {main}