Import the CA certificate problem

Hi, I wanted to try promote function for the first time. I tried to promote bot from dev CR to test CR. Both CRs are on the same build (v35). I followed all the instructions here. After that I got error "Unable to find valid certification path to requested target". So I followed another guide, but I got stuck on the 4th step. In the guide is mentioned .cer certifikate, but I only have .pfx and .crt. I tried to use them, 

D:\A360>jdk11\bin\java -jar certmgr.jar -appDir "D:\A360" -importTrustCert "C:\DOKU\cert\2024_dev\SKDDMBSSRTRPA02.mbs.skoda.vwg.crt"

but I got an error:
Exception in thread "main" java.security.cert.CertificateParsingException: signed fields invalid
        at java.base/sun.security.x509.X509CertImpl.parse(X509CertImpl.java:1826)
        at java.base/sun.security.x509.X509CertImpl.<init>(X509CertImpl.java:181)
        at java.base/sun.security.provider.X509Factory.engineGenerateCertificate(X509Factory.java:102)
        at java.base/java.security.cert.CertificateFactory.generateCertificate(CertificateFactory.java:355)
        at com.automationanywhere.certmgr.readers.CertReader.readX509Certificate(CertReader.java:25)
        at com.automationanywhere.certmgr.CertManager.rebuildTrustStore(CertManager.java:366)
        at com.automationanywhere.certmgr.CertManager.apply(CertManager.java:86)
        at com.automationanywhere.certmgr.Main.main(Main.java:21).

I even tried to create .cer certifikate from .pfx, but i got same error.

Please, do you know, what to do?

Thank you!