Training accuracy is 0.0%

[C1PO]

I've already read the old issue but I think my pcap are larger than them.
How can I solve it?

OUT: 71,IN: 75,TOTAL: 146,SIZE: 36082,RATIO: 1.056338028169014
    1 pcap files
 - google.com
OUT: 200,IN: 207,TOTAL: 407,SIZE: 110322,RATIO: 1.035
    1 pcap files
 - android.com
OUT: 106,IN: 164,TOTAL: 270,SIZE: 195666,RATIO: 1.5471698113207548
OUT: 1207,IN: 1903,TOTAL: 3110,SIZE: 2497937,RATIO: 1.5766362883181442
OUT: 119,IN: 117,TOTAL: 236,SIZE: 65432,RATIO: 0.9831932773109243
OUT: 60,IN: 69,TOTAL: 129,SIZE: 73283,RATIO: 1.15
    4 pcap files
 - facebook.com
OUT: 836,IN: 1290,TOTAL: 2126,SIZE: 1576638,RATIO: 1.5430622009569377
OUT: 50,IN: 103,TOTAL: 153,SIZE: 20293,RATIO: 2.06
OUT: 432,IN: 473,TOTAL: 905,SIZE: 398269,RATIO: 1.0949074074074074
OUT: 87,IN: 92,TOTAL: 179,SIZE: 61704,RATIO: 1.0574712643678161
    4 pcap files
 - volkswagen.it
OUT: 128,IN: 163,TOTAL: 291,SIZE: 152680,RATIO: 1.2734375
OUT: 941,IN: 1428,TOTAL: 2369,SIZE: 1789311,RATIO: 1.5175345377258236
OUT: 107,IN: 152,TOTAL: 259,SIZE: 158090,RATIO: 1.4205607476635513
OUT: 116,IN: 145,TOTAL: 261,SIZE: 152095,RATIO: 1.25
    4 pcap files
 - wikipedia.org
OUT: 65,IN: 62,TOTAL: 127,SIZE: 47268,RATIO: 0.9538461538461539
OUT: 109,IN: 120,TOTAL: 229,SIZE: 103199,RATIO: 1.1009174311926606
    2 pcap files
 - duckduckgo.com
OUT: 78,IN: 79,TOTAL: 157,SIZE: 47383,RATIO: 1.0128205128205128
    1 pcap files
Training size: 15
Testing size:  2
Accuracy: 0.0%