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We are upgrading from Magento 2.3.5 to 2.4.0

When I run php bin/magento setup:upgrade, I get the following error:

Unable to apply patch Magento\Review\Setup\Patch\Schema\AddUniqueConstraintToReviewEntitySummary for module Magento_Review. Original exception message: Warning: preg_match(): Compilation failed: invalid range in character class at offset 40 in /home/babygear/www/vendor/magento/framework/DB/Adapter/Pdo/Mysql.php on line 2779

How can I solve this error?

Best regards, Jesper

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