Error 500 Internal Server Error after update to 4.5.1

Hello,
After I updated CI 4.4.6 to 4.5.1 , some API functions encounter error "503 Internal Server Error", but other functions run correctly.

Regards,

Please show the full ERROR that you got.

What did you Try? What did you Get? What did you Expect?

Joined CodeIgniter Community 2009.  ( Skype: insitfx )

The problem was fixed. I have to use intval($limit) during fetch DB.
Thanks