Meteor Newer version support

[raza2022]

Hi @javivelasco @neyasov @soyjavi @gaearon @Pajn
Thanks for the great project for the open source community 👍
I have an existing project which is in beta release. I fully used react toolbox with a good community supported project https://github.com/nathantreid/meteor-css-modules
all things working fine and issues I solved my own till I have to update meteor version to 1.5 all done successfully except one error with related to toolbox which attached below

I search and tried all thing found within meteor context but didn't succeed :(. can you guys provide suggestion or hint regarding that error within or without meteor context (which is greatly appreciated )
Thanks