> Seems you just know more Go than PHP, which is fine of course. No language has "more runtime errors" than other languages, just developers of varying skill-levels in that particular platform

A type system reduces the risk of runtime errors, because it doesn't let you write code with undefined behaviour such as indexing a null. Depending on the implementation, it can even force you to handle all possible failures explicitly so that execution always completes. With languages such as rust or Haskell it's feasible to write complex code with almost complete confidence it won't hit any runtime errors, excluding resource exhaustion or machine failure of course.

On the other hand you could argue that logic errors depend on the skill of the programmer and not the language.