magento version 2.3. Admin login showing this error. how can i solve it?

[zeekinfo]

1 exception(s):
Exception #0 (Exception): Notice: Undefined offset: 2 in /home/309544.cloudwaysapps.com/gusczrhbaj/public_html/vendor/magento/framework/Encryption/Encryptor.php on line 588

Exception #0 (Exception): Notice: Undefined offset: 2 in /home/309544.cloudwaysapps.com/gusczrhbaj/public_html/vendor/magento/framework/Encryption/Encryptor.php on line 588

[Damian Culotta]

Hi @zeekinfo,

Can you check if the discrebd problem/solution here can help you? https://github.com/magento/magento2/issues/23511#issuecomment-520534869

Also here's the practical solution: https://stackoverflow.com/questions/57458213/notice-undefined-offset-2-in-vendor-magento-framework-e...

[jd_krane]

Has anyone found a solution that does not involve the workaround proposed that updates the admin_user record with:

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

?

I am running a local dev environment on Vagrant, Ubuntu, PHP 7.3.9, which comes with Sodium built-in and enabled. Also, running MySQL 5.7.27. 

Any ideas are appreciated. 

[storeteam]

magento 2.3.3 required php 7.2 you must be using php 7.1 try updating php version.

[alabius]

this solution helped

https://stackoverflow.com/questions/57458213/notice-undefined-offset-2-in-vendor-magento-framework-e...

By creating a new admin. 

[Aims Infosoft]

Please follow the below to resolve this

For this you have to check you php version which you use for magento version 2.3

you can check magento 2.3 requirements here : https://devdocs.magento.com/guides/v2.3/install-gde/system-requirements-tech.html

Let me know if any issues

If my answer is useful, please Accept as Solution & give Kudos

Thank you

Aims Infosoft

[ashmal _ur rehm]

Hey!

Just simply update your PHP version because Magento 2 won't work on 7.1. 

If you still need any help, feel free to ping me or inbox me.

[EcomPlugins]

this error coming on magento 2.4 with php 7.4