Bug with file type options.accept causing desk tool to crash in Sanity v3

[Sanity v3 bug?] File type options.accept: when I click the “Browse” button, the desk tool crashed with error: “*Error: accept.split is not a function*”. The error goes away when I remove the options.accept.
Schema:

{

name: "document",

type: "file",

title: "Document",

options: {

accept: [

"application/pdf",

],

},

}

My previous Sanity v2 projects are fine.

Does anyone know how to get it resolved? Thanks.

I think ‘accept’ expects a string not an array of strings

Thank you. Weird that I had it wrong in my previous projects.

I could be wrong, but I believe both were handled in v2 (a string or an array of strings), but in v3 we tightened it up to align with what was documented (i.e., only a string). So I don’t think it’s that you were wrong before, but perhaps that we didn’t enforce it.

That makes sense. Thanks !!