I'm going crazy, look at the photos: if I move the SWD CLK connection in one point of the breadboard the connection works, in another it doesn't! The chip is a STM32L412KB, I tried to replace it but nothing! I also replaced the ST-LINK but nothing yet.

[APast.1]

[Tesla DeLorean]

I'm not a fan of this type of bread-boarding, clearly have some signal integrity issue here. Keep things direct, with the minimum number of interconnects

Prefer wire-wrap or schmartboard-jumperwires here as these methods both have biting metal-to-metal connectivity.

[APast.1]

Thanks for your help, the only solution was to try and try to change the position of the connections until the error disappeared