Array
(
    [status] => 200
    [body] => Array
        (
            [challenge] => 20260211-CR-487DEE4000-780EBB2812-14
            [timestamp] => 2026-02-11T21:06:53.284889+00:00
            [timestampMs] => 1770844013284
        )

)
<br />
<b>Fatal error</b>:  Uncaught Exception: Failure Signing Data:  - SHA256 in /home/users/0_ksef/public_html/vendor/robrichards/xmlseclibs/src/XMLSecurityKey.php:564
Stack trace:
#0 /home/users/0_ksef/public_html/vendor/robrichards/xmlseclibs/src/XMLSecurityKey.php(644): RobRichards\XMLSecLibs\XMLSecurityKey-&gt;signOpenSSL('&lt;ds:SignedInfo ...')
#1 /home/users/0_ksef/public_html/vendor/robrichards/xmlseclibs/src/XMLSecurityDSig.php(836): RobRichards\XMLSecLibs\XMLSecurityKey-&gt;signData('&lt;ds:SignedInfo ...')
#2 /home/users/0_ksef/public_html/vendor/robrichards/xmlseclibs/src/XMLSecurityDSig.php(860): RobRichards\XMLSecLibs\XMLSecurityDSig-&gt;signData(Object(RobRichards\XMLSecLibs\XMLSecurityKey), '&lt;ds:SignedInfo ...')
#3 /home/users/0_ksef/public_html/index.php(136): RobRichards\XMLSecLibs\XMLSecurityDSig-&gt;sign(Object(RobRichards\XMLSecLibs\XMLSecurityKey))
#4 {main}
  thrown in <b>/home/users/0_ksef/public_html/vendor/robrichards/xmlseclibs/src/XMLSecurityKey.php</b> on line <b>564</b><br />