keil5 下载程序出错

主控 GD32F407IGH6  使用keil5下载固件出现错误，错误如下搜索

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Contents mismatch at: 08001056H  (Flash=00H  Required=08H) !
Contents mismatch at: 08001057H  (Flash=00H  Required=60H) !
Contents mismatch at: 08001059H  (Flash=00H  Required=BFH) !
Contents mismatch at: 0800105BH  (Flash=00H  Required=98H) !
Contents mismatch at: 0800105CH  (Flash=00H  Required=40H) !
Contents mismatch at: 0800105DH  (Flash=00H  Required=1CH) !
Contents mismatch at: 0800105FH  (Flash=00H  Required=90H) !
Contents mismatch at: 08001060H  (Flash=00H  Required=B8H) !
Contents mismatch at: 08001061H  (Flash=00H  Required=42H) !
Contents mismatch at: 08001063H  (Flash=00H  Required=D9H) !
Contents mismatch at: 08001064H  (Flash=00H  Required=05H) !
Contents mismatch at: 08001065H  (Flash=00H  Required=E0H) !
Contents mismatch at: 08001066H  (Flash=00H  Required=20H) !
Contents mismatch at: 08001067H  (Flash=00H  Required=68H) !
Contents mismatch at: 08001069H  (Flash=00H  Required=68H) !
Contents mismatch at: 0800106BH  (Flash=00H  Required=F0H) !
Contents mismatch at: 0800106CH  (Flash=00H  Required=01H) !
Contents mismatch at: 0800106FH  (Flash=00H  Required=28H) !
Contents mismatch at: 08001070H  (Flash=00H  Required=F3H) !
Contents mismatch at: 08001071H  (Flash=00H  Required=D1H) !
Too many errors to display !
Error: Flash Download failed  -  "Cortex-M4"
Flash Load finished at 17:58:26

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