I have a lecture note in which a few footnotes are given, but in some cases the text runs into the footnote, and it has been impossible for me to exhibit a minimal example where the issue appears. In the link

the issue is shown in the real case. If I remove a few lines of text before the last paragraph on th tepage shown in the above link, the issue disappears, but of course this is not a solution.

I am aware that overuse of footnotes is not recommended, but in my lecture notes I have very few of them.

Is there a way to prevent such conflicts between footnotes and the last lines of text on a page?

Many thanks in advance: OK