I add vmx trail license failed. please help thanks so much
I also try to use network mode. but it can't work too. I set up a license server is fine. I capture packet
root# set system license standalone-mode
 root# commit commit complete
 root# run request system license add terminal [Type ^D at a new line to end input, enter blank line between each license key] E435890758 aeaqic aiagij cpabsc idycyi giydco bqgiyd sdapoz gvqlkk ovxgs4 dfojcx mylma4 uhfs7p etdlfc ex2i5k 4mo4fa ew2xbz ujzbol 4fl44z ya3md2 drdgjf preowc 5ubrju kyq error: license validation failed with safenet error: The given license code is invalid. Hence, it could not be added to the "no-net" license server. add license failed (1 errors)
 root# run show version Model: vmx Junos: 20.1R1.11
To use the licenses for vMX and vBNG features in Junos OS Release 19.2R1, you need new license keys. Previous license keys are supported for previous Junos OS releases, but for Junos OS Release 19.2R1 and later releases, you need to migrate existing licenses (one-time activity). Contact https://support.juniper.net/support/requesting-support/ to exchange previous licenses. Note that you can choose either to use individual license keys for each device or to deploy Juniper Agile License Manager for more efficient management of licenses.
It is not mandatory to install the Agile License Manager to use vMX or vBNG licenses on Junos OS Release 19.2R1 and later releases. The Agile License Manager is a new option that provides more efficient management of licenses. You can continue to use individual license keys for each device if required. Existing license keys are not supported on Junos OS Release 19.2R1 and later releases. Contact https://support.juniper.net/support/requesting-support/ for exchanging previous license keys.