Failed to find discard button after Gmail UI new update

[Shahrukh Khan]

Error logged: Error: Failed to find discard button
    at t.value (content.js:5:921259)
    at content.js:5:918840
    at y._handleValue (content.js:5:236830)
    at y._handleAny (content.js:5:217385)
    at _$handleAny (content.js:5:217123)
    at b (content.js:5:213939)
    at y._on (content.js:5:232012)
    at y.onAny (content.js:5:229472)
    at y._onActivation (content.js:5:217522)
    at y._setActive (content.js:5:228538)
    at y._on (content.js:5:231969)
    at y.onAny (content.js:5:229472)
    at y._onActivation (content.js:5:233902)
    at y._setActive (content.js:5:228538)
    at y._on (content.js:5:231969)
    at y.onError (content.js:5:229390)
    at new t (content.js:5:919427)
    at content.js:5:772121
    at content.js:5:1532133
    at g._handleValue (content.js:5:236830)
    at g._handleAny (content.js:5:217385)
    at _$handleAny (content.js:5:217123)
    at b (content.js:5:213939)
    at v.dispatch (content.js:5:228238)
    at Ue._emitValue (content.js:5:228895)
    at Ue._emit (content.js:5:228761)
    at Ue._addToCur (content.js:5:247302)
    at Ue._add (content.js:5:246876)
    at Ue._handleMain (content.js:5:250518)
    at Ue._$handleMain (content.js:5:224607)
    at b (content.js:5:213939)
    at v.dispatch (content.js:5:228238)
    at Ue._emitValue (content.js:5:228895)
    at Ue._emit (content.js:5:228761)
    at Ue._addToCur (content.js:5:247302)
    at Ue._add (content.js:5:246876)
    at Ue._handleMain (content.js:5:250518)
    at Ue._$handleMain (content.js:5:224607)
    at b (content.js:5:213939)
    at v.dispatch (content.js:5:228238)