UNSOLVED Output MMM-Buienradar disappears on display after 90 minutes

[veldje]

My MagicMirror on Raspbeery Pi 4b has been running satisfactorily for some time now, including the following modules: MMM-Remote-Control, MMM-MyDutchWeather; MMM-RandomBibleVerse; birthday list; MM-SimpleLogo and defaults-modules. The output of all modules is (use to be) visible on the Dell display and also via VNC (via remote control).

Currently there is the problem that the output of the module MM-Buienradar (github.com/StefanNienhuis) disappears from the display after 90 minutes. After a reboot it comes back for another 90 minutes.
In the absence of the output on the display, the output can be seen via reboot-control in VNC.
A git pull for MMM-Buienradar doesn’t help.

What could be the problem here and how can it be solved?