Exception in rendering!

Message: Cannot read property 'length' of null

TypeError: Cannot read property 'length' of null
    at e.exports.e.exports.nextBreak (<anonymous>:135:69574)
    at e.exports.e.exports.splitGraphemes (<anonymous>:135:69888)
    at s (<anonymous>:135:1013870)
    at L (<anonymous>:234:1177706)
    at i (<anonymous>:202:11190)
    at Ee (<anonymous>:202:12208)
    at e.t.render (<anonymous>:202:14790)
    at e.t.read (<anonymous>:202:14362)
    at t.renderToString (<anonymous>:202:19515)
    at AppContainer (<anonymous>:147:92793)