The generator matrix

 1  0  0  0  1  1  1  1  4  1  1  0  6  1  0  1  2  6  1  2  1  1  2  1  1  4  1  1  2  4  0  6  1  1  2  4  1  1  2  1  1  0  6  6  1  0  1  1  1  6  2  1  1  2  2  0  1  2  1  0  1  0  6  1  1  1  0  1  1  0  4  1  6  1
 0  1  0  0  0  0  1  3  1  5  4  1  1  7  2  6  1  6  6  1  7  7  4  7  5  1  2  6  4  4  1  1  3  7  0  1  4  7  2  6  1  4  1  1  0  0  3  0  3  1  1  6  0  1  1  2  7  0  2  1  6  4  1  1  1  3  1  7  5  1  1  0  1  4
 0  0  1  0  0  1  0  3  3  5  7  2  7  4  1  6  2  4  1  6  2  3  1  1  6  1  3  2  1  1  6  1  0  6  1  2  1  0  4  5  6  1  7  7  3  6  6  7  1  6  3  0  4  0  1  6  0  1  4  3  7  1  5  2  5  5  0  3  0  3  7  0  3  0
 0  0  0  1  1  3  7  5  6  4  4  5  3  0  5  6  0  1  7  1  3  2  2  7  0  0  0  3  0  5  2  3  2  1  1  0  7  5  1  2  2  6  3  4  5  1  3  7  1  3  2  6  2  2  1  1  7  7  3  1  6  6  4  4  1  7  1  1  1  6  0  0  3  0
 0  0  0  0  2  2  2  2  0  2  2  0  4  2  0  2  4  4  2  4  2  2  0  6  6  4  6  6  0  4  4  6  0  0  6  2  4  4  6  4  4  6  6  6  0  2  4  6  4  2  2  6  0  2  0  6  4  0  2  2  4  4  2  0  6  0  0  4  6  6  0  4  6  6
 0  0  0  0  0  4  4  0  4  4  0  4  0  0  4  4  4  4  0  0  0  4  4  4  4  0  4  0  0  0  0  4  0  4  4  0  4  0  4  0  4  0  0  4  0  4  4  4  4  0  0  0  4  4  0  0  0  4  0  0  4  4  0  4  4  4  4  4  0  4  0  4  4  0

generates a code of length 74 over Z8 who´s minimum homogenous weight is 64.

Homogenous weight enumerator: w(x)=1x^0+101x^64+366x^65+672x^66+1052x^67+1395x^68+1650x^69+2018x^70+2312x^71+2626x^72+2734x^73+2889x^74+2936x^75+2563x^76+2466x^77+2083x^78+1596x^79+1210x^80+822x^81+549x^82+312x^83+187x^84+74x^85+65x^86+44x^87+10x^88+14x^89+10x^90+4x^91+3x^92+2x^93+2x^94

The gray image is a code over GF(2) with n=296, k=15 and d=128.
This code was found by Heurico 1.16 in 39.9 seconds.