There is a bug in the PCB123. Pin name is different between the schematic symbol and footprint. You can work around this by selecting the part from the layout side and add it to your design. This way it will not give you error message, but will give you a different symbol. The cause of the this error message you see is due to the symbol was using ping 1 to 7 to name the pins, but the footprint is using 1-6 and 1I to name the pins.
So, just switch to layout and click on “add part” symbol on top center, to add this part to your design. The symbol will be look like this: