ID:20593 The sign later option is enabled but the SRAM Object File <name> does not contain root key information (.qky).

CAUSE: You attempted to bypass signing the bitstream in the programming file. However, the specified SRAM Object File (.sof) does not contain root key information (.qky).

ACTION: Specify a root key file (.qky) when regenerating the SRAM Object File (.sof), or disable the sign later option.