invalid character '<' looking for beginning of value

[rosberen]

I get this error after configuring dashboard provider.

Grafana deploy helm official, If you fall into the very pods, that dashboard files available /var/lib/grafana/dashboards/monitoring/app2-dashboard.json

my dashboards are hosted on gitlab pages.

logger=provisioning.dashboard type=file name=monitoring t=2023-03-20T14:19:03.889232179Z level=error msg="failed to load dashboard from " file=/var/lib/grafana/dashboards/monitoring/dashboard.json error="invalid character '<' looking for beginning of value"

Is anyone familiar with this error? if so can you share with me your experience on how you got it fixed?

When I load these dashboards manually into grafana, they work fine.