There is an error in code even though it seems to be completely right.I am trying to glow the LED with the help of touch slider present on stm32l152-DISCOVERY board.I used the reference pdf for this purpose and did all the steps as mentioned in there .
I am just getting one error and it dosent seem to go.Can anyone help me to figure out why this error is coming and help me to resolve it asap.I have attached a screenshot of the same for the refrence below.