we have solved the problem by upgrading from Debian 9 to Debian 10... Somehow this solved all the problem, we did not change anything, everything else stayed the same version (node/npm/NodeBB)... FYI...
load JS in custom HTML
I tie a pinterest.
to an external js file must be included.
I always have to just press F5 thus appears pinterest.
in the Custom HTML I have installed the following code.
I think that is not loaded properly.