当在主机为mac的虚拟盒上的Ubuntu guest虚拟机操作系统上安装sap nw 7.5时，出现以下异常。
ERROR 2018-10-23 15:26:42.943 (root/sapinst) id=nw.syscopy.license.delete.failed errno=CJS-30264
Deleting SAP license failed: Deleting SAP license failed, see output of log file: /tmp/sapinst_instdir/NW73/SBC/STANDARD/dev_likey..
ERROR 2018-10-23 15:26:43.042 (root/sapinst) id=controller.stepExecuted errno=FCO-00011
The step DeleteLicense with step key |offlineadjustment_dialogs|ind|ind|ind|ind|0|0|import_license_adapter|ind|ind|ind|ind|import_license|0|delete_license_abap|ind|ind|ind|ind|deleteLicenseAbap|0|DeleteLicense was executed with status ERROR ( Last error reported by the step: Deleting SAP license failed, see output of log file: /tmp/sapinst_instdir/NW73/SBC/STANDARD/dev_likey.).
关于这可能是什么原因的任何想法？另外，这种情况发生在开始安装大约30-35分钟之后。