Crab And Cucumber Pastries With Mustard Sauce

• 4 sheets phyllo pastry
• 130 gr flaked crabmeat
• 80 ml mayonnaise
• 60 ml whipping cream
• 60 gr onion (finely chopped red)
• 55 gr butter melted
• 45 gr mango chutney
• 34 gr chives (chopped fresh)
• 30 ml dijon mustard
• 30 ml sour cream