human
Solve the following python programming problem given the following code:
def likes(url, fb = '') : 
    'Return the number of times a given URL was liked in Facebook.' 
    if (not fb) : 
        def gfb(url) : 
            global fb 
            return fb (url) 
try : 
            fb = json.loads (gfb (url)) 
except : 
            return 'Error' 
else : 
        try : 
            fb = json.loads (fb) 
except : 
            return 'Error' 
if ('data' in fb) : 
        return walkdict (gfb ['data'] [0], 'like_count') 
else : 
        return 'Error' 

    
    

    Fix the buggy line: return walkdict (gfb ['data'] [0], 'like_count')
assistant
#Here is Python code to fix the buggy line: return walkdict (gfb ['data'] [0], 'like_count')
.

return walkdict (fb ['data'] [0], 'like_count')