The generator matrix

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

generates a code of length 57 over Z8 who´s minimum homogenous weight is 46.

Homogenous weight enumerator: w(x)=1x^0+74x^46+140x^47+311x^48+390x^49+629x^50+994x^51+1283x^52+1910x^53+2555x^54+2934x^55+3462x^56+3562x^57+3198x^58+3088x^59+2478x^60+1952x^61+1464x^62+900x^63+565x^64+334x^65+233x^66+126x^67+79x^68+42x^69+35x^70+10x^71+11x^72+2x^73+4x^74+1x^80+1x^88

The gray image is a code over GF(2) with n=228, k=15 and d=92.
This code was found by Heurico 1.16 in 37.5 seconds.