# Doctrine\\DBAL\\Exception: An exception occurred while establishing a connection to figure out your platform version

**URL:** https://forum.mautic.org/t/doctrine-dbal-exception-an-exception-occurred-while-establishing-a-connection-to-figure-out-your-platform-version/25010
**Category:** Mautic 4 Install/Upgrade Support
**Created:** [August 10, 2022, 2:23pm UTC](https://forum.mautic.org/t/doctrine-dbal-exception-an-exception-occurred-while-establishing-a-connection-to-figure-out-your-platform-version/25010 "2022-08-10T14:23:58Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![nextideas](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/nextideas/32/8029_2.png) [@nextideas](https://forum.mautic.org/u/nextideas)
#### Post date: [August 10, 2022, 2:23pm UTC](https://forum.mautic.org/t/doctrine-dbal-exception-an-exception-occurred-while-establishing-a-connection-to-figure-out-your-platform-version/25010/1 "2022-08-10T14:23:58Z")

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**Your software**  
_My PHP version is_ : 7.4  
_My MySQL/MariaDB version is_ (delete as applicable): 10.3.32-MariaDB

**Updating/Installing Errors**  
_I am_ : Installing

This Mautic was installed on local envirement (works fine), and after was migrated to a cloud vps. when i launch this on cloud vps, the error appear. The difference was only about DB:  
Local was = mysql 8.0.30  
Cloud vps = Maria DB 10.3

_These errors are showing in the log of server_ :

Doctrine\DBAL\Exception: An exception occurred while establishing a connection to figure out your platform version.  
You can circumvent this by setting a ‘server\_version’ configuration value

_Steps I have tried to fix the problem_ :

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<div class="post-metadata">

### Author: ![nextideas](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/nextideas/32/8029_2.png) [@nextideas](https://forum.mautic.org/u/nextideas)
#### Post date: [August 10, 2022, 2:32pm UTC](https://forum.mautic.org/t/doctrine-dbal-exception-an-exception-occurred-while-establishing-a-connection-to-figure-out-your-platform-version/25010/2 "2022-08-10T14:32:20Z")

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it was DB credentials error.  
after this works.

[resolved]

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### Author: ![frencofzc](https://avatars.discourse-cdn.com/v4/letter/f/e95f7d/32.png) [@frencofzc](https://forum.mautic.org/u/frencofzc)
#### Post date: [July 14, 2023, 5:29am UTC](https://forum.mautic.org/t/doctrine-dbal-exception-an-exception-occurred-while-establishing-a-connection-to-figure-out-your-platform-version/25010/3 "2023-07-14T05:29:26Z")

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Got error 'PHP message: Doctrine\DBAL\DBALException: An … while establishing a connection to figure out your platform version.