Singularmatrix error report: solution

Solution

For example, K is a singular matrix of order 8, as long as a very small number is added to the diagonal of K,
K[0,0]=K[0,0]+np.array([1e-6] )
K[1,1]=K[1,1]+np.array([1e-6])
K[2,2]=K[2,2]+np.array([1e-6])
K [3,3]=K[3,3]+np.array([1e-6])
K[4,4]=K[4,4]+np.array([1e-6])
K[5 ,5]=K[5,5]+np.array([1e-6])
K[6,6]=K[6,6]+np.array([1e-6])
K[7,7 ]=K[7,7]+np.array([1e-6])