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Invalid argument when sending Bluetooth packets through srbt()

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Hi, I'm trying to send a Bluetooth packet to a known mac address, I tried the function srbt(), as the code below: ```python pkts=HCI_Hdr(type=2)/HCI_ACL_Hdr(handle=0x040, PB=0, BC=0)/L2CAP_Hdr(cid=0x0004)/ ATT_Hdr(opcode=0x52)/ATT_Write_Command(gatt_handle=0x000d,data=bytes(data.buf)) srbt('e8:32:2a:d2:a8:79', pkts, inter=0.1)...

Hi, I am using MAGIC to impute my matrix, and I run the command below (here data is my sparse matrix) ```r data_magic