matplotlib 실행 시 한글 깨짐 오류 메시지 --------------------------------------------------------------------------------------------------------------------------------- findfont: Font family ['san-serif'] not found. Falling back to DejaVu Sans. /home/user/.local/lib/python3.8/site-packages/matplotlib/backends/backend_agg.py:240: RuntimeWarning: Glyph 51064 missing from current font. font.set_text(s, 0.0, ..