try resolving longtable issue

_static/latex/preamble.tex

@@ -6,6 +6,7 @@
 \usepackage[some]{background}
 \usepackage{sectsty}
 \usepackage{lscape}
+\usepackage{longtable}
 
 \definecolor{bg-color}{HTML}{a97f2c}
 

beaglebone-black/ch07.rst

@@ -65,6 +65,7 @@ THE BOARD. IT WILL DAMAGE THE PROCESSOR AND VOID THE WARRANTY.*
 
 .. list-table:: Expansion Header P8 Pinout
    :header-rows: 1
+   :class: longtable
    :align: center
 
    * - PIN 
@@ -625,6 +626,7 @@ THE BOARD. IT WILL DAMAGE THE PROCESSOR AND VOID THE WARRANTY.*
 
 .. list-table:: Expansion Header P9 Pinout
    :header-rows: 1
+   :class: longtable
    :align: center
 
    * - PIN