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Dolibarr ERP: Error "Blank screen on login" and PHP error: Uncaught DateInvalidTimeZoneException

Dolibarr ERP CRM DateTimeZone PHP

Sometime on Ubuntu 24, you will see a error " Unknown or bad timezone (Asia/Saigon)" it will caught Dolibarr shown only blank page after login:

Stack trace:
[25-Jul-2025 12:36:42 Asia/Bangkok] PHP Fatal error:  Uncaught DateInvalidTimeZoneException: DateTimeZone::__construct(): Unknown or bad timezone (Asia/Saigon) in /home/gimitec/public_html/htdocs/core/lib/functions.lib.php:3637
  thrown in /home/gimitec/public_html/htdocs/core/lib/functions.lib.php on line 3637
#5 {main}
#4 /home/gimitec/public_html/htdocs/index.php(103): llxHeader()
#3 /home/gimitec/public_html/htdocs/main.inc.php(1414): top_menu()
#2 /home/gimitec/public_html/htdocs/main.inc.php(2270): top_menu_user()
#1 /home/gimitec/public_html/htdocs/main.inc.php(2393): dol_print_date()
#0 /home/gimitec/public_html/htdocs/core/lib/functions.lib.php(3637): DateTimeZone->__construct()

1 Answer

Best Answer

To fix this issue just by your OS missed legacy tzdata

So on CLI install it as below code:

sudo apt-get install tzdata-legacy -y

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