The model of the development board is LPCXpresso54S018M, as shown in Figure 1, which is the corresponding package I installed. Figure 2 shows the configuration of flash, as shown in Figure 3, using microusb to connect to the Debug Link, and Figure 4 shows the DAP emulator. Now the code can be debugged normally, but as shown in Figure 5, error will be reported when downloading. I don't know how to solve this problem, I hope my friends can help me, thank you very much!
As far as I can see, you are using only the debug, you need to power the board with the power cable, I recommend you to read the start quick guide of this board. https://www.nxp.com/document/guide/get-started-with-the-lpc54s018m-evk:GS-LPC54S018M-EVK