The TigaseService version I am using is 8.3.0

The problem I encountered was when, according to official documents http://localhost:8080 After setting the address. An error occurred while using Spark to register users

The error is as follows:

[2023-05-28 21:53:08:609] [SEVERE ] [ in_7-c2s ] SSLContextContainer.getSSLContext(): Can not initialize SSLContext for domain: xxxx, protocol: TLS java.io.IOException: Cannot run program "keytool": error=13, Permission denied at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1143) at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1073) at tigase.cert.KeytoolCertificateGenerator.generateSelfSignedCertificateEntry(KeytoolCertificateGenerator.java:117) at tigase.cert.CertificateUtil.createSelfSignedCertificate(CertificateUtil.java:142) at tigase.io.CertificateContainer.createCertificateKmf(CertificateContainer.java:538) at tigase.io.CertificateContainer.createCertificate(CertificateContainer.java:142) at tigase.io.SSLContextContainerAbstract.createCertificate(SSLContextContainerAbstract.java:112) at tigase.io.SSLContextContainerAbstract.createContextHolder(SSLContextContainerAbstract.java:144) at tigase.io.SSLContextContainer.getSSLContext(SSLContextContainer.java:286) at tigase.io.SSLContextContainer.getSSLContext(SSLContextContainer.java:269) at tigase.io.SSLContextContainer.createIoInterface(SSLContextContainer.java:210) at tigase.net.IOService.startTLS(IOService.java:435) at tigase.server.xmppclient.ClientConnectionManager.processCommand(ClientConnectionManager.java:769) at tigase.server.xmppclient.ClientConnectionManager.processPacket(ClientConnectionManager.java:129) at tigase.server.AbstractMessageReceiver$QueueListener.run(AbstractMessageReceiver.java:1398) Caused by: java.io.IOException: error=13, Permission denied at java.base/java.lang.ProcessImpl.forkAndExec(Native Method) at java.base/java.lang.ProcessImpl.(ProcessImpl.java:314) at java.base/java.lang.ProcessImpl.start(ProcessImpl.java:244) at java.base/java.lang.ProcessBuilder.start(ProcessBuilder.java:1110) ... 14 more

[2023-05-28 21:53:08:610] [SEVERE ] [ in_7-c2s ] AbstractMessageReceiver$QueueListener.run(): [in_7-c2s] Exception during packet processing: from=sess-man@xxx, to=null, serverAuthorisedStanzaFrom=Optional.empty, DATA=, SIZE=273, XMLNS=null, PRIORITY=NORMAL, PERMISSION=LOCAL, TYPE=set, STABLE_ID=null java.lang.NullPointerException: Cannot invoke "javax.net.ssl.SSLContext.createSSLEngine()" because "sslc" is null at tigase.io.JcaTLSWrapper.(JcaTLSWrapper.java:81) at tigase.io.SSLContextContainer.createIoInterface(SSLContextContainer.java:213) at tigase.net.IOService.startTLS(IOService.java:435) at tigase.server.xmppclient.ClientConnectionManager.processCommand(ClientConnectionManager.java:769) at tigase.server.xmppclient.ClientConnectionManager.processPacket(ClientConnectionManager.java:129) at tigase.server.AbstractMessageReceiver$QueueListener.run(AbstractMessageReceiver.java:1398)

What I want to know is that SSL/TSL is mandatory in this version? I still haven't solved my problem after trying to use the following configurations according to the official documentation. So, I would like to know that for security reasons, SSL/TLS must be used when connecting in this version. It is still possible to bypass verification through configuration. 'vhost-tls-required' = false c2s () { seeOtherHost {} sslContextContainer () { 'tls-disabled-protocols' =[ 'TLSv1.3', 'TLSv1.2' ] } }

I am new to this field, so I hope the official can help me. thanks