Your default timezone is not supported by PHP. Check for typos in your PHP configuration

Product Support
1

Your software
My Mautic version is: 6.0.3
My PHP version is: PHP 8.3.23
My Database type and version is: mariadb 10.5

Your problem
I’m deploying Mautic in production using the official Docker image mautic:6.0.3-apache. I’m encountering a specific timezone validation issue that occurs during backup restoration:

Fresh Installation Behavior:
Default timezone: UTC (initial setup)
After changing to “America/Sao_Paulo” via interface:
Works perfectly with no warnings

Backup Restoration Problem:
When restoring both /html files and database:
app/config/local.php shows correct America/Sao_Paulo timezone
Mautic displays error:
“Your default timezone is not supported by PHP. Check for typos in your PHP configuration.”

Temporary workaround:
If I manually set UTC in local.php before accessing Mautic
Then change back to “America/Sao_Paulo” after login
The error disappears

These errors are showing in the log:
Your default timezone is not supported by PHP. Check for typos in your PHP configuration.

Steps I have tried to fix the problem:
Docker-level Configuration:

  • Created symbolic link in docker-compose: bash -c "ln -sf /usr/share/zoneinfo/America/Sao_Paulo /etc/localtime
  • Set environment variables: TZ: America/Sao_Paulo, PHP_INI_VALUE_DATE_TIMEZONE: “America/Sao_Paulo”

PHP Configuration:

  • Modified multiple PHP ini files in docker-compose: /usr/local/etc/php/conf.d/timezone.ini, /usr/local/etc/php/php.ini
2

I had the same error installing Mautic 4 with docker. It aborted installation because of this error, and I did many installs without this error in the past.

3

I tested with other timezones (like America/Chicago) and the error did not occur. When testing with any Brazilian timezone (e.g., America/Sao_Paulo, America/Bahia, etc.), the error always happened.