@clarkwinkelmann the issue @Artuu is experiencing, I can duplicate as well and as much as PHP errors aren't as helpful, I learned a thing or two while working on extensions (finally 😉)
The error stems from this line more specifically the second parameter in the array_get() function, it's expecting a string and was given an array for the key instead.
Not sure how to fix other than just making it an empty string, but to my knowledge of how to read code, I am not even sure what the drawbacks are or what the actual fix for this is 🙁
