Strange Font download error

For some strange reason I am getting warnings message about fonts ( which are not used) in Chome console window when running Meteor:

Failed to decode downloaded font: data:;base64,d09GMgABAAAAAJAYAA4AAAABp+QAAI++AAEAgwAAAAAAAAAAAAAAAAAAAAAAAA…NU0aCB1d65qJeFne2tmsLcKNC1l2cty3CQPfFQe5cFZJsoD8vOVeqs3JdlcZL/l/elgmOMVwAA
(index):1

OTS parsing error: Failed to convert WOFF 2.0 font to SFNT
(index):1

Failed to decode downloaded font: data:;base64,d09GMgABAAAAAJAYAA4AAAABp+QAAI++AAEAgwAAAAAAAAAAAAAAAAAAAAAAAA…NU0aCB1d65qJeFne2tmsLcKNC1l2cty3CQPfFQe5cFZJsoD8vOVeqs3JdlcZL/l/elgmOMVwAA
(index):1

OTS parsing error: Failed to convert WOFF 2.0 font to SFNT

(index):1 line is < !DOCTYPE html > added by Meteor!