Build Error with nRF5340DK: Troubleshooting Exercise 3 from DevAcademy Lesson 4 - Data Exchange in Bluetooth LE

Hello, I am studying DevAcademy Lesson 4 - Data exchange in Bluetooth LE, specifically Exercise 3 using the nRF5340DK. While attempting to build the corresponding Git code (v2.8.x-v2.7.0/l4/l4_e3_sol) to upload it to the nRF5340DK, I encountered the following error. I am unable to determine the cause.

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