Smartedit Error after upgrade from Hybris 6.7 to Hybris 1811.4

Hi Experts,

We have upgraded our code base from hybris 6.7 to 1811.4. After this facing below error in smartedit. I have tried re-installing smarteditaddon and javaScipt.tag entry (for addonjavascript) but no success. Please help to resolve this.

thirdparties.js:285 TypeError: Cannot read property '$modelValue' of undefined at YtreeComponent.isMoveUpAllowed (smarteditcontainer.js:1) at Object. (smarteditcontainer.js:1) at thirdparties.js:424 at m.$digest (thirdparties.js:309) at m.$apply (thirdparties.js:313) at k (thirdparties.js:264) at w (thirdparties.js:269) at XMLHttpRequest.E.onload (thirdparties.js:270)

- Do you have any suggestions on this.