#### This issue pertains to the following package(s): - [x] GraphQL Playground - Electron App - [ ] GraphQL Playground HTML - [ ] GraphQL Playground - [ ] GraphQL Playground Express Middleware - [ ] GraphQL Playground Hapi Middleware - [ ] GraphQL Playground Koa Middleware - [ ] GraphQL Playground Lambda Middleware #### What OS and OS version are you experiencing the issue(s) on? MacOS 10.13.4 #### What version of graphql-playground(-electron/-middleware) are you experiencing the issue(s) on? 1.5.4 #### What is the expected behavior? Click on tab "History" works when no history #### What is the actual behavior? Uncaught TypeError: Cannot read property 'toJS' of undefined at HistoryPopup.render (app.87c01a5….js:171911) #### What steps may we take to reproduce the behavior? Click on one of sample projects on start, then click on "History tab" _Please provide a gif or image of the issue for a quicker response/fix._ <img width="1200" alt="image" src="https://user-images.githubusercontent.com/582446/38768788-25ba47c4-3ff9-11e8-95e9-3ac00f487eed.png">