You might need the vSphere Client system log files to resolve technical issues.

When you use a vCenter Server instance, the vSphere Client system logs can be found in the location listed in the table.

Table 1. Location of vSphere Client Logs
vCenter Server System Location
vCenter Server /var/log/vmware/vsphere-ui/logs

The main vSphere Client log file is vsphere_client_virgo.log.