i have 548 weeks of data , trying use tbats little success. following error:   error in checkforremoteerrors(val) :    3 nodes produced errors; first error: function cannot evaluated @ initial parameters   my data:   weeklyu <-structure(list(v1 = c(18594l, 13593l, 9854l, 12040l, 12920l,  13302l, 12500l, 13073l, 13801l, 12895l, 13199l, 21568l, 19848l,  13418l, 13188l, 13560l, 21327l, 17724l, 11875l, 12475l, 15130l,  14497l, 16289l, 22388l, 17091l, 21104l, 19579l, 18432l, 13234l,  16728l, 15368l, 18105l, 14715l, 16763l, 16788l, 15701l, 17331l,  18725l, 24336l, 16186l, 14299l, 15144l, 17444l, 19384l, 17035l,  18611l, 25946l, 32773l, 41676l, 59446l, 74874l, 19839l, 18325l,  17417l, 14025l, 15225l, 15323l, 16075l, 14756l, 15567l, 19416l,  15190l, 14349l, 19137l, 17714l, 22033l, 20182l, 16660l, 23325l,  19769l, 19465l, 16379l, 20762l, 19084l, 17395l, 21461l, 17616l,  25190l, 22671l, 21138l, 15302l, 19633l, 18951l, 20609l, 16493l,  18680l, 19583l, 18474l, 17654l, 20000l, 26003l, 17507l...