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TPS54202: About 50Ω resistor at FB partial resistance

Part Number: TPS54202

Regarding R1 in the Reference Design described on page 13 of the data sheet, what kind of problem may occur when it is set to 0Ω (not installed)?
Since the feedback capacitor (C6) is not installed in the circuit currently being evaluated, I think that there is no effect of R1 on the control loop, and I will ask you a question.