After a while xfce4-panel running, it crashed. I have tried to run xfce4-panel command to restore the panels but got this error:

libpager-Message: Setting the pager rows returned false. Maybe the setting is not applied.
xfce4-panel: cairo-scaled-font.c:459: _cairo_scaled_glyph_page_destroy: Assertion `!scaled_font->cache_frozen' failed.
Aborted (core dumped)

And after some tries, it was started but then crash again...