“Extra Pin U1-22 in Normal of part U1”, as shown in the figure below:

Cause analysis: the principle is that all modes of the components in the component library cannot match the introduced modes in PCB. The solution is either to complete or delete them until only one is left.
Delete solution:
1. Enter the library file. Duplicate a new component and rename it to “+Normal”.
2. Delete redundant modes:

3. Then the compiler will not have this error.