Xpathexpressionexception error ?

Hello,

I had the below error :

Buildfile: /opt/erabia/hybris/bin/platform/build.xml [echo] /opt/erabia/hybris/bin/platform/tomcat/bin [ysetplatformproperties] [Fatal Error] :129:7: The string "--" is not permitted within comments.

BUILD FAILED /opt/erabia/hybris/bin/platform/build.xml:20: The following error occurred while executing this line: /opt/erabia/hybris/bin/platform/resources/ant/antmacros.xml:114: XPathExpressionException when scanning for the autoload mode

Any help appreciated !