Problem in apm planner map loading

hey , im getting an error in running apm planner :

ApmSoftwareConfig::apmParamNetworkReplyFinished() Unable to retrieve pdef.xml file! Error num: QNetworkReply::NetworkError(TimeoutError) : “Socket operation timed out”

im currently using proxy and it works fine for apt-get , pip , npm but still gets connecion error for apm planner
help !!