How do I solve this error axiserror: axis 1 is out of bounds for array of dimension 1

Traceback (most recent call last):
  File "<pyshell#18>", line 1, in <module>
    result = waipy.cwt(data_norm, 1, 1, 0.25, 2, 4/0.25, alpha, 6, mother='Morlet')
  File "/usr/local/lib/python2.7/dist-packages/waipy/cwt/wavetest.py", line 75, in cwt
    ondaleta,wave,period,scale,coi,f = lib_wavelet.wavelet(data,dt,mother,param)#,pad,dj,s0,j1,mother,param)
  File "/usr/local/lib/python2.7/dist-packages/waipy/cwt/lib_wavelet.py", line 132, in wavelet
    k = np.concatenate((k_pos,k_neg), axis =1)  			# vector of symmetric
AxisError: axis 1 is out of bounds for array of dimension 1

result = cwt(data_norm, 1, 1, 0.25, 2, 4/0.25, alpha, 6, mother='Morlet')