Error:
This jar contains unsigned entries which have not been integrity-checked.
This jar contains entries whose certificate chain is invalid. Reason: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
This jar contains entries whose signer certificate is self-signed.

Warning:
This jar contains signatures that do not include a timestamp. Without a timestamp, users may not be able to validate this jar after any of the signer certificates expire (as early as 2025-11-28).

Re-run with the -verbose and -certs options for more details.
sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at java.base/sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:387)
at java.base/sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:270)
at java.base/sun.security.validator.Validator.validate(Validator.java:256)
at java.base/sun.security.validator.Validator.validate(Validator.java:223)
at jdk.jartool/sun.security.tools.jarsigner.Main.validateCertChain(Main.java:2506)
at jdk.jartool/sun.security.tools.jarsigner.Main.certsAndTSInfo(Main.java:2144)
at jdk.jartool/sun.security.tools.jarsigner.Main.signerInfo(Main.java:2100)
at jdk.jartool/sun.security.tools.jarsigner.Main.verifyJar(Main.java:881)
at jdk.jartool/sun.security.tools.jarsigner.Main.run(Main.java:304)
at jdk.jartool/sun.security.tools.jarsigner.Main.main(Main.java:138)
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at java.base/sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:148)
at java.base/sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:129)
at java.base/java.security.cert.CertPathBuilder.build(CertPathBuilder.java:295)
at java.base/sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:382)
... 9 more
sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at java.base/sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:387)
at java.base/sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:270)
at java.base/sun.security.validator.Validator.validate(Validator.java:256)
at java.base/sun.security.validator.Validator.validate(Validator.java:223)
at jdk.jartool/sun.security.tools.jarsigner.Main.validateCertChain(Main.java:2506)
at jdk.jartool/sun.security.tools.jarsigner.Main.certsAndTSInfo(Main.java:2144)
at jdk.jartool/sun.security.tools.jarsigner.Main.signerInfo(Main.java:2100)
at jdk.jartool/sun.security.tools.jarsigner.Main.verifyJar(Main.java:881)
at jdk.jartool/sun.security.tools.jarsigner.Main.run(Main.java:304)
at jdk.jartool/sun.security.tools.jarsigner.Main.main(Main.java:138)
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at java.base/sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:148)
at java.base/sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:129)
at java.base/java.security.cert.CertPathBuilder.build(CertPathBuilder.java:295)
at java.base/sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:382)
... 9 more

Exit value: 20