printer stopped printing from LibreOffice

My Brother laser printer tests o.k. & will print o.k. However, LibreOffice documents have totally stopped being able to be printed.
I have had sporadic printing problems in the past; some caused by the printer & some caused by LibreOffice. At this point I have determined that the printer is behaving - now however, it is LibreOffice that seems to be causing problems.
I am setup with a wireless connection. Do you think that a wired connection may help? Any other suggestions?

Which OS and LO-Version do you use?
Test it with a cable connection.