Very complex debugging in Laravel?

Question

Laravel

It's incredibly difficult to fix mistakes when you constantly see this:

Uncaught exception 'ErrorException' with message 'htmlspecialchars() [<a href='function.htmlspecialchars'>function.htmlspecialchars</a>]: Invalid multibyte sequence in argument'

...and sheets of backtrace. How to be in such situations?
PS Do not offer a tambourine.

Answer 1

As it turned out, you need to install the PHP version in a fresh way.

Answer 2

I have a similar situation while sending an email with the same error. It is interesting that I tried it on different hostings and it works for everyone, but not for what you need)