エラーではないのですが、急に警告が出て、PDFにコンパイルできなくなりました、、、

fictplay-slides.tex
75
LaTeX Font Warning: Font shape `OT1/cmss/m/n' in size <4> not available size <5> substituted on input line 75.

fictplay-slides.tex

LaTeX Font Warning: Size substitutions with differences up to 1.0pt have occurred.

fictplay-slides.tex
104
Overfull \vbox (6.3145pt too high) detected at line 104