Cleaned up errors to be more precise.

[Andrew-Cha]

They now specify the place where it happens (due to the nature of JS being wonky, I feel like this would help with debugging).

Also follow a correct grammatical sentence structure - capitalization etc.

[kaimoe]

Thanks! Just one concern: I disagree with changing the case of parameters in favor of proper grammar, since I think that'd make the error slightly more complicated to amend (having an error mention The ID of __ when the actual property is id, all lowercase, might be confusing).

Just going to change that, but otherwise, looks good!

[Andrew-Cha]

Sounds good