The generator matrix

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

generates a code of length 37 over Z8 who´s minimum homogenous weight is 29.

Homogenous weight enumerator: w(x)=1x^0+260x^29+657x^30+1540x^31+2300x^32+3762x^33+5031x^34+6930x^35+7686x^36+8554x^37+8081x^38+7440x^39+5302x^40+3668x^41+2071x^42+1298x^43+502x^44+262x^45+94x^46+72x^47+17x^48+6x^49+2x^50

The gray image is a code over GF(2) with n=148, k=16 and d=58.
This code was found by Heurico 1.16 in 57.4 seconds.