libpng12 dependency

[jadmadi]

Hi,
Any idea what's going on? getting the below error when running gatsby develop or build.

`error Failed to process image /home/web/content/posts/2017-11-21--like-nonsense-2/33893097-e5a70c34-df5a-11e7-8f5e-40e057626770.png

Error: /home/web/content/node_modules/pngquant-bin/vendor/pngquant: error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or directory

• index.js:231 Promise.all.then.arr
  [web]/[exec-buffer]/[execa]/index.js:231:11

• next_tick.js:68 process._tickCallback
  internal/process/next_tick.js:68:7

ERROR

UNHANDLED REJECTION //home/web/content/node_modules/pngquant-bin/vendor/pngquant: error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or
directory

Error: /home/web/content/node_modules/pngquant-bin/vendor/pngquant: error while loading shared libraries: libpng12.so.0: cannot open shared object file: No such file or directory

• index.js:231 Promise.all.then.arr
  [web]/[exec-buffer]/[execa]/index.js:231:11

• next_tick.js:68 process._tickCallback
  internal/process/next_tick.js:68:7
  `