Prestashop Website goes down

I've got the following error message:
[Wed Jan 20 11:40:10.198503 2021] [fcgid:warn] [pid 20386:tid 139744044369664] [client 69.162.124.234:59732] mod_fcgid: stderr: PHP Fatal error: Uncaught PrestaShop\\PrestaShop\\Core\\Localization\\Exception\\LocalizationException: Unknown locale code: es-ES in /var/www/vhosts/tecsostenible.com/shop.tecsostenible.com/src/Core/Localization/Currency.php:185, referer: https://tecsostenible.com
[Wed Jan 20 11:40:10.198543 2021] [fcgid:warn] [pid 20386:tid 139744044369664] [client 69.162.124.234:59732] mod_fcgid: stderr: Stack trace:, referer: https://tecsostenible.com
[Wed Jan 20 11:40:10.198552 2021] [fcgid:warn] [pid 20386:tid 139744044369664] [client 69.162.124.234:59732] mod_fcgid: stderr: #0 /var/www/vhosts/tecsostenible.com/shop.tecsostenible.com/src/Core/Localization/Specification/Factory.php(121): PrestaShop\\PrestaShop\\Core\\Localization\\Currency->getSymbol('es-ES'), referer: https://tecsostenible.com

[Wed Jan 20 11:40:10.198560 2021] [fcgid:warn] [pid 20386:tid 139744044369664] [client 69.162.124.234:59732] mod_fcgid: stderr: #1 /var/www/vhosts/tecsostenible.com/shop.tecsostenible.com/src/Core/Localization/Locale/Repository.php(218): PrestaShop\\PrestaShop\\Core\\Localization\\Specification\\Factory->buildPriceSpecification('es-ES', Object(PrestaShop\\PrestaShop\\Core\\Localization\\CLDR\\Locale), Object(PrestaShop\\PrestaShop\\Core\\Localization\\Currency), true, 'symbol', 0), referer: https://tecsostenible.com
[Wed Jan 20 11:40:10.198582 2021] [fcgid:warn] [pid 20386:tid 139744044369664] [client 69.162.124.234:59732] mod_fcgid: stderr: #2 /var/www/vhosts/tecsostenible.com/shop.tecsostenible.com/src/Core/Localization/Locale/Repository.php(150): PrestaShop\\PrestaShop\\Core\\Localization\\Locale\\Repository->getPriceSpecifications('es-ES'), referer: https://tecsostenible.com
[Wed Jan 20 11:40:10.198589 2021] [fcgid:warn] [pid 20386:tid 139744044369664] [client 69.162.124.234:59732] mod_fcgid: stderr: #3 /var/www/vhosts/tecsostenible.com/shop.tecsostenible.com/classes/control in /var/www/vhosts/tecsostenible.com/shop.tecsostenible.com/src/Core/Localization/Currency.php on line 185, referer: https://tecsostenible.com

It happened yesterday and we recover a 24. Hrs old backup. We had the problem again and today we did the recovery of Jan 14 so we have 6 days to fix the problem.


Can you help?