Wipers

I’m looking for some diagnostic help with a wiper issue. One of the front wipers on my td5 53 plate defender.
it started by both sticking and making aloud clicking noise. It did this for a month or so but now one has stopped completely and they drivers side one is working fine with the passage side one stopped and no clicking. Any thoughts on a possible fix as I guess the motor is still ok.

Hello and welcome

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Defender, 90, 110, 130 (tratters)
https://www.landyzone.co.uk/forum/defender-90-110-130.7