Malformed serialization for argument in the feedback URLs: `[object Object]`

[tales-aparecida]

Reported in the mailing list:

URL used to send feedback:
https://dashboard.kernelci.org/hardware[object Object]

Easy to reproduce:

1. Open the dashboard
2. Click on "Send us feedback" in the sidebar
3. Click on either Github or Email and it will try to report a feedback like

https://github.com/kernelci/dashboard/issues/new?labels=feedback&title=[Feedback]:&body=%23%20Feedback%20Description%3A%0A%20%20%0A%23%23%20URL%20used%20to%20send%20feedback%3A%0Ahttps%3A%2F%2Fdashboard.kernelci.org%2Ftree%5Bobject%20Object%5D

href="mailto:kernelci-webdashboard@groups.io?body=Feedback%20Description%3A%0A%20%20%0AURL%20used%20to%20send%20feedback%3A%0Ahttps%3A%2F%2Fdashboard.kernelci.org%2Ftree%5Bobject%20Object%5D&subject=Dashboard Feedback"