Previously I had heard and seen on several issues regarding this. One of them is this forum. And it turns out I experienced the same thing. See the error on the image below.
I was trying to fix the error code and discover the error message. Seen this line which is the source of the error. You can open this file “/system/core/Common.php”.
You can quickly turn it into like this.
And now try to refresh your web browser. You can continue the your project now.