when click method of add,first time,it can be opened normally
when i open it seond time,TypeError: Cannot read property 'push' of undefined
TypeError: Cannot read property 'push' of undefined
at VueComponent.addRule (VueQueryBuilder.common.js?9a97:4618)
at invokeWithErrorHandling (vue.runtime.esm.js?2b0e:1854)
at HTMLButtonElement.invoker (vue.runtime.esm.js?2b0e:2179)
at HTMLButtonElement.original._wrapper (vue.runtime.esm.js?2b0e:6917)
a demo with vue-query-builder
when i open it seond time,TypeError: Cannot read property 'push' of undefined
TypeError: Cannot read property 'push' of undefined at VueComponent.addRule (VueQueryBuilder.common.js?9a97:4618) at invokeWithErrorHandling (vue.runtime.esm.js?2b0e:1854) at HTMLButtonElement.invoker (vue.runtime.esm.js?2b0e:2179) at HTMLButtonElement.original._wrapper (vue.runtime.esm.js?2b0e:6917)