How can I deal with this problem

[loliicant]

[henzeb]

Well, I don't know, there is not much to go on. If admin.blade.php is yours, you should look for a property that might not be set. use xdebug. Check what variables it is expecting and see if they are truly being set.

But please, if you have a problem, that you cannot solve, tell us what you did do, tell us enough details so we can actually help you.