"TypeError": 'module' object is not callable......

[mubeenmeo344]

merge([UpSampling2D(size=(2, 2))(conv5), conv4], mode='concat', concat_axis=1)

when I Run the above line....it gave me the following error...Kindly reply as fast as possible

"
Traceback (most recent call last):
File "C:\Program Files\JetBrains\PyCharm 2018.1.3\helpers\pydev\pydevd.py", line 1664, in
main()
File "C:\Program Files\JetBrains\PyCharm 2018.1.3\helpers\pydev\pydevd.py", line 1658, in main
globals = debugger.run(setup['file'], None, None, is_module)
File "C:\Program Files\JetBrains\PyCharm 2018.1.3\helpers\pydev\pydevd.py", line 1068, in run
pydev_imports.execfile(file, globals, locals) # execute the script
File "C:\Program Files\JetBrains\PyCharm 2018.1.3\helpers\pydev_pydev_imps_pydev_execfile.py", line 18, in execfile
exec(compile(contents+"\n", file, 'exec'), glob, loc)
File "C:/Users/Mubeen/Downloads/Brain-tumor-segmentation-using-deep-learning-master/BRATS2015.py", line 187, in
model = unet_model()
File "C:/Users/Mubeen/Downloads/Brain-tumor-segmentation-using-deep-learning-master/BRATS2015.py", line 140, in unet_model
up6 = merge([UpSampling2D(size=(2, 2))(conv5), conv4], mode='concat', concat_axis=1)
TypeError: 'module' object is not callable
"