Magento – Magento 2 : Notice: Undefined offset: 2 in vendor/magento/framework/Encryption/Encryptor.php on line 588

adminencryption-keymagento2magento2.3.2PHP

I am facing this error after a move to new server Magento customer login

{"0":"Notice: Undefined offset: 2 in /www/web/demo/vendor/magento/framework/Encryption/Encryptor.php on line 588"

PHP Version is the same: PHP Version 7.2.24-he.0

Sodium from Frank Denis

What can I do to solve this?

Thanks In advance..!

We are facing the same issue.

For me, it got solved after installing PHP version 7.2 and installing the php7.2-sodium extension

Try this solution and let me know if it works for you.

For me executing this query:

UPDATE admin_user SET password = CONCAT(SHA2('xxxxxxxxNewPassword', 256), ':xxxxxxxx:1') WHERE username = 'admin';

Your environment is using ARGON2ID13 instead of SHA256 for hashing.

Check if you have 'sodium' php extension enabled.

If you disable the libsodium php extension, it will fallback on SHA-256 and won't break Magento.

In the Docker php-fpm image you can comment it out in /usr/local/etc/php/conf.d/docker-php-ext-sodium.ini:

;extension=sodium.so