r/u_Newo-24

I recently purchased a 2018 Ford Focus ST-Line Ecoboost. While driving, the engine management light started flashing amber. A mechanic diagnosed misfires in cylinders 1 and 3.

He replaced all the coil packs, which initially turned off the light. However, it reappeared after driving the car again. Following this, the mechanic also replaced all the spark plugs, but the light remains on solid.

I have put my car back on the diagnostics and this is the code that has came up (See image)

What's the best step to take from now?