Android App Bundle expires

When I upload the apk file, it says "The uploaded APK or Android App Bundle is signed with a certificate that expires quickly. The APK or Android App Bundle is a certificate with an earlier expiration date. You need to sign with. For more information, see the signature instructions. " I am creating a keystore with a keystore explorer. (Because jdk15 is not found) It was useless even if the expiration date was extended to 35 years. What’s wrong?
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Thank you.

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