Attempting to create list from MNLogit results getting ValueError: Data must be 1-dimensional

Question

I'm attempting to create a pandas dataframe from results from MNLogit (StatsModel). When I run each of the params separately, the lists print as expected, but when inserted in the data argument of DataFrame I get the ValueError: Data must be 1-dimensional. Not sure what the issue is here.

 coefs = pd.DataFrame({
    'coefficients': round(logit_res.params,4),
    'odds ratio':round(np.exp(logit_res.params),4),
    'p-value': round(logit_res.pvalues,4),
    'col_name':logit_res.params.index}).sort_values(by='p-value', ascending=False)

These are the results when run individually

round(logit_res.params,4)
         0
    const -29.0178
    0      -0.0000
    1       0.0001
    2       0.0176
    3       0.0422
    4       0.0865

round(np.exp(logit_res.params),4)

                 0
    const   0.0000
    0       1.0000
    1       1.0001
    2       1.0177
    3       1.0431
    4       1.0904

round(logit_res.pvalues,4)

                0
    const  0.0000
    0      0.0001
    1      0.0000
    2      0.0000
    3      0.0000
    4      0.1303

logit_res.params.index

    Index(['const',       0,       1,       2,       3,       4])