Unable to extract pdf due to certificate error

Hi, I was able to extract the PDF document yesterday but it is failing with same credentials and private.key today. What is the cause of the error? Can someone please take a look?

[INFO] --- exec-maven-plugin:1.5.0:java (default-cli) @ pdfservices-sdk-samples ---
[INFO ] 2023-02-03 15:03:47.775 [com.adobe.pdfservices.operation.samples.extractpdf.ExtractTextTableInfoWithFiguresTablesRenditionsFromPDF.main()] ExtractPDFOperation - All validations successfully done. Beginning ExtractPDF operation execution
[WARN ] 2023-02-03 15:03:49.687 [com.adobe.pdfservices.operation.samples.extractpdf.ExtractTextTableInfoWithFiguresTablesRenditionsFromPDF.main()] HttpClient - Connection exception encountered while executing request ims.session_token 
[ERROR] 2023-02-03 15:03:49.687 [com.adobe.pdfservices.operation.samples.extractpdf.ExtractTextTableInfoWithFiguresTablesRenditionsFromPDF.main()] ExtractTextTableInfoWithFiguresTablesRenditionsFromPDF - Exception encountered while executing operation
com.adobe.pdfservices.operation.exception.SdkException: Request could not be completed. Possible cause attached!
        at com.adobe.pdfservices.operation.internal.http.HttpClientWrapper.executeApacheHttpRequest(HttpClientWrapper.java:162) ~[pdfservices-sdk-3.2.0.jar:?]
        at com.adobe.pdfservices.operation.internal.http.HttpClientWrapper.executeRequest(HttpClientWrapper.java:146) ~[pdfservices-sdk-3.2.0.jar:?]
        at com.adobe.pdfservices.operation.internal.http.HttpClientWrapper.lambda$send$0(HttpClientWrapper.java:115) ~[pdfservices-sdk-3.2.0.jar:?]
        at net.jodah.failsafe.Functions.lambda$resultSupplierOf$11(Functions.java:283) ~[failsafe-2.0.1.jar:2.0.1]
        at net.jodah.failsafe.internal.executor.RetryPolicyExecutor.lambda$supply$0(RetryPolicyExecutor.java:67) ~[failsafe-2.0.1.jar:2.0.1]
        at net.jodah.failsafe.Execution.executeSync(Execution.java:117) ~[failsafe-2.0.1.jar:2.0.1]
        at net.jodah.failsafe.FailsafeExecutor.call(FailsafeExecutor.java:319) ~[failsafe-2.0.1.jar:2.0.1]
        at net.jodah.failsafe.FailsafeExecutor.get(FailsafeExecutor.java:71) ~[failsafe-2.0.1.jar:2.0.1]
        at com.adobe.pdfservices.operation.internal.http.HttpClientWrapper.send(HttpClientWrapper.java:115) ~[pdfservices-sdk-3.2.0.jar:?]
        at com.adobe.pdfservices.operation.internal.auth.JwtAuthenticator.refreshSessionToken(JwtAuthenticator.java:108) ~[pdfservices-sdk-3.2.0.jar:?]
        at com.adobe.pdfservices.operation.internal.auth.JwtAuthenticator.getSessionToken(JwtAuthenticator.java:88) ~[pdfservices-sdk-3.2.0.jar:?]
        at com.adobe.pdfservices.operation.internal.http.BaseHttpRequest.authenticate(BaseHttpRequest.java:148) ~[pdfservices-sdk-3.2.0.jar:?]
        at com.adobe.pdfservices.operation.internal.http.HttpClientWrapper.executeRequest(HttpClientWrapper.java:144) ~[pdfservices-sdk-3.2.0.jar:?]
        at com.adobe.pdfservices.operation.internal.http.HttpClientWrapper.lambda$send$0(HttpClientWrapper.java:115) ~[pdfservices-sdk-3.2.0.jar:?]
        at net.jodah.failsafe.Functions.lambda$resultSupplierOf$11(Functions.java:283) ~[failsafe-2.0.1.jar:2.0.1]
        at net.jodah.failsafe.internal.executor.RetryPolicyExecutor.lambda$supply$0(RetryPolicyExecutor.java:67) ~[failsafe-2.0.1.jar:2.0.1]
        at net.jodah.failsafe.Execution.executeSync(Execution.java:117) ~[failsafe-2.0.1.jar:2.0.1]
        at net.jodah.failsafe.FailsafeExecutor.call(FailsafeExecutor.java:319) ~[failsafe-2.0.1.jar:2.0.1]
        at net.jodah.failsafe.FailsafeExecutor.get(FailsafeExecutor.java:71) ~[failsafe-2.0.1.jar:2.0.1]
        at com.adobe.pdfservices.operation.internal.http.HttpClientWrapper.send(HttpClientWrapper.java:115) ~[pdfservices-sdk-3.2.0.jar:?]
        at com.adobe.pdfservices.operation.internal.api.StorageApi.createPreSignedUri(StorageApi.java:62) ~[pdfservices-sdk-3.2.0.jar:?]
        at com.adobe.pdfservices.operation.internal.api.StorageApi.getUploadURI(StorageApi.java:117) ~[pdfservices-sdk-3.2.0.jar:?]
        at com.adobe.pdfservices.operation.internal.service.ExtractPDFService.ExtractPDFService.extractPdf(ExtractPDFService.java:49) ~[pdfservices-sdk-3.2.0.jar:?]
        at com.adobe.pdfservices.operation.pdfops.ExtractPDFOperation.execute(ExtractPDFOperation.java:141) ~[pdfservices-sdk-3.2.0.jar:?]
        at com.adobe.pdfservices.operation.samples.extractpdf.ExtractTextTableInfoWithFiguresTablesRenditionsFromPDF.main(ExtractTextTableInfoWithFiguresTablesRenditionsFromPDF.java:64) [classes/:?]
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:?]
        at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:?]
        at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:?]
        at java.lang.reflect.Method.invoke(Method.java:566) ~[?:?]
        at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:294) [exec-maven-plugin-1.5.0.jar:?]
        at java.lang.Thread.run(Thread.java:829) [?:?]
Caused by: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alert.createSSLException(Alert.java:131) ~[?:?]
        at sun.security.ssl.TransportContext.fatal(TransportContext.java:349) ~[?:?]
        at sun.security.ssl.TransportContext.fatal(TransportContext.java:292) ~[?:?]
        at sun.security.ssl.TransportContext.fatal(TransportContext.java:287) ~[?:?]
        at sun.security.ssl.CertificateMessage$T12CertificateConsumer.checkServerCerts(CertificateMessage.java:654) ~[?:?]
        at sun.security.ssl.CertificateMessage$T12CertificateConsumer.onCertificate(CertificateMessage.java:473) ~[?:?]
        at sun.security.ssl.CertificateMessage$T12CertificateConsumer.consume(CertificateMessage.java:369) ~[?:?]
        at sun.security.ssl.SSLHandshake.consume(SSLHandshake.java:392) ~[?:?]
        at sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:443) ~[?:?]
        at sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:421) ~[?:?]
        at sun.security.ssl.TransportContext.dispatch(TransportContext.java:182) ~[?:?]
        at sun.security.ssl.SSLTransport.decode(SSLTransport.java:172) ~[?:?]
        at sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1426) ~[?:?]
        at sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1336) ~[?:?]
        at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:450) ~[?:?]
        at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:421) ~[?:?]
        at org.apache.http.conn.ssl.SSLConnectionSocketFactory.createLayeredSocket(SSLConnectionSocketFactory.java:436) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:384) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) ~[httpclient-4.5.13.jar:4.5.13]
        at com.adobe.pdfservices.operation.internal.http.HttpClientWrapper.executeApacheHttpRequest(HttpClientWrapper.java:155) ~[pdfservices-sdk-3.2.0.jar:?]
        ... 30 more
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:439) ~[?:?]
        at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:306) ~[?:?]
        at sun.security.validator.Validator.validate(Validator.java:264) ~[?:?]
        at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:313) ~[?:?]
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:222) ~[?:?]
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:129) ~[?:?]
        at sun.security.ssl.CertificateMessage$T12CertificateConsumer.checkServerCerts(CertificateMessage.java:638) ~[?:?]
        at sun.security.ssl.CertificateMessage$T12CertificateConsumer.onCertificate(CertificateMessage.java:473) ~[?:?]
        at sun.security.ssl.CertificateMessage$T12CertificateConsumer.consume(CertificateMessage.java:369) ~[?:?]
        at sun.security.ssl.SSLHandshake.consume(SSLHandshake.java:392) ~[?:?]
        at sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:443) ~[?:?]
        at sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:421) ~[?:?]
        at sun.security.ssl.TransportContext.dispatch(TransportContext.java:182) ~[?:?]
        at sun.security.ssl.SSLTransport.decode(SSLTransport.java:172) ~[?:?]
        at sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1426) ~[?:?]
        at sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1336) ~[?:?]
        at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:450) ~[?:?]
        at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:421) ~[?:?]
        at org.apache.http.conn.ssl.SSLConnectionSocketFactory.createLayeredSocket(SSLConnectionSocketFactory.java:436) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:384) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) ~[httpclient-4.5.13.jar:4.5.13]
        at com.adobe.pdfservices.operation.internal.http.HttpClientWrapper.executeApacheHttpRequest(HttpClientWrapper.java:155) ~[pdfservices-sdk-3.2.0.jar:?]
        ... 30 more
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141) ~[?:?]
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126) ~[?:?]
        at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:297) ~[?:?]
        at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:434) ~[?:?]
        at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:306) ~[?:?]
        at sun.security.validator.Validator.validate(Validator.java:264) ~[?:?]
        at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:313) ~[?:?]
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:222) ~[?:?]
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:129) ~[?:?]
        at sun.security.ssl.CertificateMessage$T12CertificateConsumer.checkServerCerts(CertificateMessage.java:638) ~[?:?]
        at sun.security.ssl.CertificateMessage$T12CertificateConsumer.onCertificate(CertificateMessage.java:473) ~[?:?]
        at sun.security.ssl.CertificateMessage$T12CertificateConsumer.consume(CertificateMessage.java:369) ~[?:?]
        at sun.security.ssl.SSLHandshake.consume(SSLHandshake.java:392) ~[?:?]
        at sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:443) ~[?:?]
        at sun.security.ssl.HandshakeContext.dispatch(HandshakeContext.java:421) ~[?:?]
        at sun.security.ssl.TransportContext.dispatch(TransportContext.java:182) ~[?:?]
        at sun.security.ssl.SSLTransport.decode(SSLTransport.java:172) ~[?:?]
        at sun.security.ssl.SSLSocketImpl.decode(SSLSocketImpl.java:1426) ~[?:?]
        at sun.security.ssl.SSLSocketImpl.readHandshakeRecord(SSLSocketImpl.java:1336) ~[?:?]
        at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:450) ~[?:?]
        at sun.security.ssl.SSLSocketImpl.startHandshake(SSLSocketImpl.java:421) ~[?:?]
        at org.apache.http.conn.ssl.SSLConnectionSocketFactory.createLayeredSocket(SSLConnectionSocketFactory.java:436) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.conn.ssl.SSLConnectionSocketFactory.connectSocket(SSLConnectionSocketFactory.java:384) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108) ~[httpclient-4.5.13.jar:4.5.13]
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56) ~[httpclient-4.5.13.jar:4.5.13]
        at com.adobe.pdfservices.operation.internal.http.HttpClientWrapper.executeApacheHttpRequest(HttpClientWrapper.java:155) ~[pdfservices-sdk-3.2.0.jar:?]
        ... 30 more