Template render error

Template render error: (/opt/build/repo/node_modules/@frctl/mandelbrot/views/pages/components/detail.nunj)
  Template render error: (/opt/build/repo/node_modules/@frctl/mandelbrot/views/partials/pen/browser.nunj)
  Template render error: (/opt/build/repo/node_modules/@frctl/mandelbrot/views/partials/browser/browser.nunj)
  Template render error: (/opt/build/repo/node_modules/@frctl/mandelbrot/views/partials/browser/panel-notes.nunj) [Line 3, Column 34]
  Error: Missing helper: "static"
    at Object._prettifyError (/opt/build/repo/node_modules/nunjucks/src/lib.js:36:11)
    at /opt/build/repo/node_modules/nunjucks/src/environment.js:567:19
    at eval (eval at _compile (/opt/build/repo/node_modules/nunjucks/src/environment.js:637:18), :42:11)
    at eval (eval at _compile (/opt/build/repo/node_modules/nunjucks/src/environment.js:637:18), :62:12)
    at eval (eval at _compile (/opt/build/repo/node_modules/nunjucks/src/environment.js:637:18), :148:12)
    at eval (eval at _compile (/opt/build/repo/node_modules/nunjucks/src/environment.js:637:18), :214:12)
    at /opt/build/repo/node_modules/nunjucks/src/environment.js:575:11
    at eval (eval at _compile (/opt/build/repo/node_modules/nunjucks/src/environment.js:637:18), :18:11)
    at /opt/build/repo/node_modules/nunjucks/src/environment.js:575:11
    at eval (eval at _compile (/opt/build/repo/node_modules/nunjucks/src/environment.js:637:18), :52:12)
    at /opt/build/repo/node_modules/nunjucks/src/environment.js:575:11
    at Template.root [as rootRenderFunc] (eval at _compile (/opt/build/repo/node_modules/nunjucks/src/environment.js:637:18), :31:3)
    at Template.render (/opt/build/repo/node_modules/nunjucks/src/environment.js:556:10)
    at eval (eval at _compile (/opt/build/repo/node_modules/nunjucks/src/environment.js:637:18), :51:10)
    at fn (/opt/build/repo/node_modules/a-sync-waterfall/index.js:26:24)
    at /opt/build/repo/node_modules/a-sync-waterfall/index.js:66:22