I've tried to change the ID name but it did not work.

1 exception(s):
Exception #0 (InvalidArgumentException): Element with id "system_cron_template_use_separate_process" already exists

Exception #0 (InvalidArgumentException): Element with id "system_cron_template_use_separate_process" already exists
#0 /chroot/home/this/my.com/html/vendor/magento/framework/Data/Form/Element/AbstractElement.php(93): Magento\Framework\Data\Form->checkElementId('system_cron_tem...')
#1 /chroot/home/this/my.com/html/vendor/magento/framework/Data/Form/AbstractForm.php(157): Magento\Framework\Data\Form\Element\AbstractElement->addElement(Object(Magento\Framework\Data\Form\Element\Select), false)
#2 /chroot/home/this/my.com/html/vendor/magento/framework/Data/Form/Element/Fieldset.php(212): Magento\Framework\Data\Form\AbstractForm->addField('system_cron_tem...', 'select', Array, false)
#3 /chroot/home/this/my.com/html/vendor/magento/module-config/Block/System/Config/Form.php(392): Magento\Framework\Data\Form\Element\Fieldset->addField('system_cron_tem...', 'select', Array)

I tried changing the ID here: vendor/magento/module-cron/etc/adminhtml/system.xml

It did work.

1 Answer 1


first run command grep -ir "system_cron_template_use_separate_process" app/ to find out the duplicate element id

Second, then change it and then run command -

rm -rf var/cache* generated/*

then check again.

  • The first command grep -ir "system_cron_template_use_separate_process" app/ didn't return anything. @Shashank
    – getData
    Oct 19, 2018 at 3:13
  • ok so you are getting this error when you go to system > configuration. correct ? Oct 19, 2018 at 3:14
  • also please mention which magento version are you using ? Oct 19, 2018 at 3:17
  • Correct, inside admin when I click on Configuration > Advanced > System
    – getData
    Oct 19, 2018 at 3:17
  • 2.2.5 is the version i'm running.
    – getData
    Oct 19, 2018 at 3:17

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