Error installing plugin discrete

Hi,
i use Grafana version 7.5 and need the discrete plugin to display my data.
unfortunately I don’t get it installed. My system win 10 pro
database influxdb
zip file and extracted to grafana / public / app / plugins / panel. restart my system.
Discrete appears in the plugin list, but cannot be started. error message:
Error loading: natel-discrete-panel
The following is in the log file:
remote_addr = 127.0.0.1 time_ms = 21 size = 36081 referer = “http://127.0.0.1:3000/d/QoqfRg_Gz/new-dashboard-copy?editPanel=2&orgId=1
t = 2021-03-29T15: 45: 40 + 0200 lvl = info msg = “Request Completed” logger = context userId = 1 orgId = 1 uname = admin method = GET path = / public / app / plugins / panel / dist / img / discrete_logo.svg status = 404 remote_addr = 127.0.0.1 time_ms = 24 size = 36081 referer = “http://127.0.0.1:3000/d/QoqfRg_Gz/new-dashboard-copy?editPanel=2&orgId=1
does anyone have a tip?

hello did you try with the upgraded version or an earlier version 7.4 ? this should help i had same issues here

I Tried 7.4.1. but i have the same result