# Mautic is not working after trying to upgrade from 2.15 to 2.16 **URL:** \ **Category:** Product Support\ **Created:** [December 8, 2022, 8:53pm UTC](https://forum.mautic.org/t/mautic-is-not-working-after-trying-to-upgrade-from-2-15-to-2-16/26356 "2022-12-08T20:53:51Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![mahamcou](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/mahamcou/32/1595_2.png) [@mahamcou](https://forum.mautic.org/u/mahamcou)\ **Post date:** [December 8, 2022, 8:53pm UTC](https://forum.mautic.org/t/mautic-is-not-working-after-trying-to-upgrade-from-2-15-to-2-16/26356/1 "2022-12-08T20:53:51Z")
**Your software** My Mautic version is: 2.15 My PHP version is: 7.2 My Database type and version is: MySQL5.7 **Your problem** My problem is: I attempted to upgrade Mautic from v2.15 to 2.16 through the dashboard but that broke. I have done a fresh installation of 4.4.5 but I need to bring my data from the old version. These errors are showing in the log: The file containing the list of deleted files was not found, could not process the deleted file list. Steps I have tried to fix the problem: Cleared Cache from app directory Result: No change. Mautic is not working. The site is currently offline due to encountering an error. If the problem persists, please contact the system administrator. #### System administrators, check server logs for errors. ---
**Author:** ![joeyk](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/joeyk/32/11164_2.png) [@joeyk](https://forum.mautic.org/u/joeyk)\ **Post date:** [December 9, 2022, 8:01am UTC](https://forum.mautic.org/t/mautic-is-not-working-after-trying-to-upgrade-from-2-15-to-2-16/26356/2 "2022-12-09T08:01:26Z")
Hi, there is no general solution to this, but the good news is, it’s easier then an open heart surgery. Steps I would do: 1. load back your backup - check migrations manually 1. if you run this on a shared hosting, then copy the data and db over to appropriate hosting, I recommend LXC for easy snashot and restore. 2. create environment where 2.16 runs: php 7.1/7.2, mysql 5.7 3. do upgrade from command line to Mautic 3 4. upgrade environment to php 7.4 mariadb 10.5 5. command line upgrade to 4.+ → 4.4.5 6. transfer back to appropriate environment In each upgrade you might have errors, those need to be fixed on the fly. For example: Mautic 2 → Mautic 3 possible error due to foregn keys Mautic 3 → Mautic 4. possible missing columns Mautic 4 moving possible error due to auto generated columns cannot be loaded from dump. It’s totally possible: ![image](https://us1.discourse-cdn.com/flex020/uploads/mautic/original/2X/8/8b4fcc50c1ee7001f1202e34de589a2eecbe8747.png) OR [Halloween Edition: the Scary Mautic Upgrade 2.16 to 4.01 (Marketing Automation Show 2x03) - YouTube](https://youtu.be/Qy0jJ09AD5E) ---
**Author:** ![mahamcou](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/mahamcou/32/1595_2.png) [@mahamcou](https://forum.mautic.org/u/mahamcou)\ **Post date:** [December 9, 2022, 8:24am UTC](https://forum.mautic.org/t/mautic-is-not-working-after-trying-to-upgrade-from-2-15-to-2-16/26356/3 "2022-12-09T08:24:06Z")
Thank you for your reply. I am running on VPS. To add to the fun, while I had exported the mautic db earlier, now I am unable to import the database back using phpmyadmin. I am not too technical, I have access to the WHM terminal but not SSH. Help! ---
**Author:** ![joeyk](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/joeyk/32/11164_2.png) [@joeyk](https://forum.mautic.org/u/joeyk)\ **Post date:** [December 9, 2022, 8:50am UTC](https://forum.mautic.org/t/mautic-is-not-working-after-trying-to-upgrade-from-2-15-to-2-16/26356/4 "2022-12-09T08:50:07Z")
Oh that is fun. Still not a lost cause, just need time. I PMd you.