swim error [30006]: st-link connection error on STM8L050J3

Hi,

a communication error occurred on STM8L050J3 while studying.

i use STVD, ST-LINK/V2 ISOL, STM8L050J3.

it was't working after download to USART.

i think that SWIM communication(Port A0) and USART_RX(Pin C6) is Pin 1 as same, so two communication crash.

could you help me how to repair the chip?

Best regards.

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