The generator matrix

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

generates a code of length 63 over Z8 who´s minimum homogenous weight is 54.

Homogenous weight enumerator: w(x)=1x^0+154x^54+564x^55+814x^56+1384x^57+1560x^58+2264x^59+2407x^60+2916x^61+2716x^62+3172x^63+2916x^64+3084x^65+2292x^66+2246x^67+1545x^68+1108x^69+692x^70+474x^71+211x^72+140x^73+40x^74+42x^75+6x^76+8x^77+2x^78+6x^79+2x^80+2x^84

The gray image is a code over GF(2) with n=252, k=15 and d=108.
This code was found by Heurico 1.11 in 14.1 seconds.