Only variables can be passed by reference

Question

I had the bright idea of using a custom error handler which led me down a rabbit hole.

Following code gives (with and without custom error handler): Fatal er

Answer 1

I just got this error chaining methods.

doSomething()->andThis()

I had:

doSomething()-andThis() // missing `>` character

My scenario was a little more complex, but it stemmed from the accidental subtraction operation.