TypeError

Cannot read property 'body' of undefined
    at markup (/home/nowuser/src/.sapper/server/main.d1a056f217c3b9674fc0.js:2178:64)
    at Object.module.exports.Slug._render (/home/nowuser/src/.sapper/server/main.d1a056f217c3b9674fc0.js:2231:17)
    at Object.module.exports.Slug.render (/home/nowuser/src/.sapper/server/main.d1a056f217c3b9674fc0.js:2212:18)
    at Promise.resolve.then.preloaded (/home/nowuser/src/node_modules/sapper/lib/index.js:156:20)
    at 
    at process._tickCallback (internal/process/next_tick.js:188:7)