Error from wavedrom format to png

[weijizeng]

When i attempted to convert wavedrom format to png, there is an error.

Error: Cannot find module '../build/Release/canvas.node'
Require stack:

• /usr/lib/node_modules/wavedrom-cli/node_modules/canvas/lib/bindings.js
• /usr/lib/node_modules/wavedrom-cli/node_modules/canvas/lib/canvas.js
• /usr/lib/node_modules/wavedrom-cli/node_modules/canvas/index.js
• /usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/jsdom/utils.js
• /usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/jsdom/living/events/MouseEvent-impl.js
• /usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/jsdom/living/generated/MouseEvent.js
• /usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js
• /usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/jsdom/living/generated/EventTarget.js
• /usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/jsdom/living/interfaces.js
• /usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/jsdom/browser/Window.js
• /usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/api.js
• /usr/lib/node_modules/wavedrom-cli/node_modules/svg2img/index.js
• /usr/lib/node_modules/wavedrom-cli/wavedrom-cli.js
  at Function.Module._resolveFilename (internal/modules/cjs/loader.js:815:15)
  at Function.Module._load (internal/modules/cjs/loader.js:667:27)
  at Module.require (internal/modules/cjs/loader.js:887:19)
  at require (internal/modules/cjs/helpers.js:74:18)
  at Object. (/usr/lib/node_modules/wavedrom-cli/node_modules/canvas/lib/bindings.js:3:18)
  at Module._compile (internal/modules/cjs/loader.js:999:30)
  at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
  at Module.load (internal/modules/cjs/loader.js:863:32)
  at Function.Module._load (internal/modules/cjs/loader.js:708:14)
  at Module.require (internal/modules/cjs/loader.js:887:19) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
  '/usr/lib/node_modules/wavedrom-cli/node_modules/canvas/lib/bindings.js',
  '/usr/lib/node_modules/wavedrom-cli/node_modules/canvas/lib/canvas.js',
  '/usr/lib/node_modules/wavedrom-cli/node_modules/canvas/index.js',
  '/usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/jsdom/utils.js',
  '/usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/jsdom/living/events/MouseEvent-impl.js',
  '/usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/jsdom/living/generated/MouseEvent.js',
  '/usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/jsdom/living/events/EventTarget-impl.js',
  '/usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/jsdom/living/generated/EventTarget.js',
  '/usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/jsdom/living/interfaces.js',
  '/usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/jsdom/browser/Window.js',
  '/usr/lib/node_modules/wavedrom-cli/node_modules/jsdom/lib/api.js',
  '/usr/lib/node_modules/wavedrom-cli/node_modules/svg2img/index.js',
  '/usr/lib/node_modules/wavedrom-cli/wavedrom-cli.js'
  How can fix it? Thanks!