How to fix “PRODUCT_SPECIFIC_LDFLAGS assigned at level: target. This setting is append-only and cannot be overridden without prepending $(inherited).” error in Xcode

click at framework....CharacterDetailExtension -> Build Settings -> and then search for PRODUCT_SPECIFIC_LDFLAGS and then double click at there (PRODUCT_SPECIFIC_LDFLAGS) and write $(inherited) in that box

and then it will solve