Magento 1.7 returns 503 instead of 404?

Hi all. Prompt in what direction to dig. The problem:
The admin created the 404 page. In the settings, too, all the manuals. (Previously, all worked OK)
Now returns a 404 page instead of folder errors, and the header 503.
+ Displays log errors.
July 9th 19 at 11:28
2 answers
July 9th 19 at 11:30
Solution
Make sure you have specified the correct url in the settings:

cdbe0cdb66394fdabba66c19da41d6cd.pngd154029206384c59a79d2c35a74107fe.png
I managed to reproduce the error by clearing the field "Default No-route URL".

Turned on the output of the error log in this manual:
www.templatemonster.com/help/magento-how-to-displa...

Here is what the log gave:
Front controller reached 100 router match iterations

Trace:
#0 /home/hide/sites/my.magento1702.com/www/app/code/core/Mage/Core/Controller/Varien/Front.php(183): Mage::throwException('Front controlle...')
#1 /home/hide/sites/my.magento1702.com/www/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#2 /home/hide/sites/my.magento1702.com/www/app/Mage.php(683): Mage_Core_Model_App->run(Array)
#3 /home/hide/sites/my.magento1702.com/www/index.php(87): Mage::run(", 'store')
#4 {main}


UPD: the Decision from the author of the question

Thank you. It was all OK. the Problem was that this code
<reference name="head">
 <action method="addItem">
<type>js</type><script>404error.js</script>
</action>
</reference>


4d64e0f863f748929745900ee07aab53.jpg
Cleaned it and it worked as it should.
Thank you. It was all OK. the Problem was that this code
<reference name="head">
 <action method="addItem">
<type>js</type><script>404error.js</script>
</action>
</reference>

joxi.ru/Vm6xj1gsxN7dLA
Cleaned it and it worked as it should. - Jamarcus.Koelpin commented on July 9th 19 at 11:33
: Write it up as an answer to the question and mark as solution... Unless, of course, so can you. - florida_Stiedema commented on July 9th 19 at 11:36
Checked. So it is possible ) - florida_Stiedema commented on July 9th 19 at 11:39
July 9th 19 at 11:32
We suggest you enable developer mode you config mangenta and you will see what is the error if you go to your page!

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