Error when running Gatsby Build Error: w and h must be numbers

[charley81]

I've built a simple website with Gatsby and Airtable. When I run Gatsby build I get the following error

/usr/local/lib/node_modules/gatsby-cli/node_modules/yoga-layout-prebuilt/yoga-layout/build/Release/nbind.js:53
throw ex;
^

Error: w and h must be numbers
at Jimp.call (/Users/chrisharley/Desktop/soundboss/node_modules/@jimp/utils/src/index.js:15:13)
at Jimp.apply [as scanQuiet] (/Users/chrisharley/Desktop/soundboss/node_modules/@jimp/core/src/index.js:1223:23)
at Jimp. [as scan] (/Users/chrisharley/Desktop/soundboss/node_modules/@jimp/core/src/index.js:1144:23)
at Potrace._processLoadedImage (/Users/chrisharley/Desktop/soundboss/node_modules/potrace/lib/Potrace.js:1005:11)
at Jimp. (/Users/chrisharley/Desktop/soundboss/node_modules/potrace/lib/Potrace.js:1048:14)
at Timeout._onTimeout (/Users/chrisharley/Desktop/soundboss/node_modules/@jimp/core/src/index.js:223:9)
at listOnTimeout (internal/timers.js:555:17)
at processTimers (internal/timers.js:498:7)
Emitted 'error' event on Jimp instance at:
at Jimp.emitMulti (/Users/chrisharley/Desktop/soundboss/node_modules/@jimp/core/src/index.js:441:10)
at Jimp.emitError (/Users/chrisharley/Desktop/soundboss/node_modules/@jimp/core/src/index.js:445:10)
at Jimp. [as scan] (/Users/chrisharley/Desktop/soundboss/node_modules/@jimp/core/src/index.js:1153:12)
at Potrace._processLoadedImage (/Users/chrisharley/Desktop/soundboss/node_modules/potrace/lib/Potrace.js:1005:11)
[... lines matching original stack trace ...]
at processTimers (internal/timers.js:498:7) {
methodName: 'scan',
eventName: 'error'
}