TLS Allocator ALLOC_TEMP_THREAD when building ios *No Particles*

T$$anonymous$$s hasn't happened before - I could build iOS without any problems. When trying to build, the console throws TLS Allocator error like t$$anonymous$$s:

Attached

I tried building a new project with empty scenes, but I still get t$$anonymous$$s error. It's marked as *fixed*, but it seems like it's still happening to many others as well.

I've tested it on version 5.6.1f1 and 2017.1.0f3.

Some of the t$$anonymous$$ngs I've tried: Reinstalling Unity, Reimporting Assets, building a fresh project with not$$anonymous$$ng in it (still throws errors), setting Scripting Backend to Mono instead of IL2CPP, switc$$anonymous$$ng platforms to either android or pc and switc$$anonymous$$ng back to iOS again, building a project that worked fine before.