human
Solve the following python programming problem given the following code:
def exceptionCodeLocationsAsJson(self, stacktraceAndVarsInScope) : 
    hashes = stacktraceAndVarsInScope [0].getStackTrace () 
    if (x is None) : 
        return None 
codeLocations = [ForaNative.getCodeLocation (h) for h in hashes] 
    codeLocations = [c for c in codeLocations if (c is not None)] 
    def formatCodeLocation(c) : 
        if (not c.defPoint.isExternal ()) : 
            return None 
def posToJson(simpleParsePosition) : 
            return { 
                'characterOffset' : simpleParsePosition.rawOffset, 
                'line' : simpleParsePosition.line, 
                'col' : simpleParsePosition.col, 
} 
return { 
            'path' : list (c.defPoint.asExternal.paths), 
            'range' : { 
                'start' : posToJson (c.range.start), 
                'stop' : posToJson (c.range.stop), 
}, 
} 
return { 
        'stacktrace' : [x for x in [formatCodeLocation (c) for c in codeLocations] if (x is not None)], 
} 

    
    

    Fix the buggy line: if (x is None) :
assistant
#Here is Python program to fix the buggy line: if (x is None) :
.

if (hashes is None) :