"Customers have also seen" plugin can not be installed

Shopware 6 (English) General Questions (EN)
1

The plugin Customers have also seen can not be installed in Shopware v6.6.3.1
Error:

Internal Server Error

An exception occurred while executing a query: SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (sw6_mydb.#sql-1_61689, CONSTRAINT fk.customers_have_also_seen.target_product_id FOREIGN KEY (target_product_id) REFERENCES product (id) ON DELETE CASCADE ON UPDATE CASCADE)

Error in Prod Log:

Uncaught PHP Exception Doctrine\DBAL\Exception\ForeignKeyConstraintViolationException: „An exception occurred while executing a query: SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (sw6_mydb.#sql-1_61852, CONSTRAINT fk.customers_have_also_seen.target_product_id FOREIGN KEY (target_product_id) REFERENCES product (id) ON DELETE CASCADE ON UPDATE CASCADE)“ at ExceptionConverter.php line 56 {„exception“:„[object] (Doctrine\DBAL\Exception\ForeignKeyConstraintViolationException(code: 1452): An exception occurred while executing a query: SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (sw6_mydb.#sql-1_61852, CONSTRAINT fk.customers_have_also_seen.target_product_id FOREIGN KEY (target_product_id) REFERENCES product (id) ON DELETE CASCADE ON UPDATE CASCADE) at /var/www/vhosts/myproject.de/httpdocs/vendor/doctrine/dbal/src/Driver/API/MySQL/ExceptionConverter.php:56)\n[previous exception] [object] (Doctrine\DBAL\Driver\PDO\Exception(code: 1452): SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (sw6_mydb.#sql-1_61852, CONSTRAINT fk.customers_have_also_seen.target_product_id FOREIGN KEY (target_product_id) REFERENCES product (id) ON DELETE CASCADE ON UPDATE CASCADE) at /var/www/vhosts/myproject.de/httpdocs/vendor/doctrine/dbal/src/Driver/PDO/Exception.php:28)\n[previous exception] [object] (PDOException(code: 23000): SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (sw6_mydb.#sql-1_61852, CONSTRAINT fk.customers_have_also_seen.target_product_id FOREIGN KEY (target_product_id) REFERENCES product (id) ON DELETE CASCADE ON UPDATE CASCADE) at /var/www/vhosts/myproject.de/httpdocs/vendor/doctrine/dbal/src/Driver/PDO/Connection.php:33)“}

2
  1. Please do not post the same question in multiple languages
  2. You should contact the extension partner directly. I highly doubt that he is active in the forum.

Kind regards

3

How to contact the extension partner? On the extension page I did not found any contacts.