Those plugins are fairly outdated but this is the first I've heard of any errors in a long time. Your attachment is not displaying for me so I'm unsure what the problem is, could you update your post to display the attachment correctly? Also make sure you provide the actual console log(F8) not just a screenshot of the error that pops up on the game screen.
TypeError: Cannot read property 'battle' of undefined
at Spriteset_Battle.$.rescaleImageBackground (LTN Core.js:1586)
at Spriteset_Battle.$.locateBattleback (LTN Core.js:1581)
at Spriteset_Battle.updateBattleback (rpg_sprites.js:2487)
at Spriteset_Battle.update (rpg_sprites.js:2454)
at rpg_scenes.js:262
at Array.forEach (<anonymous>)
at Scene_Battle.Scene_Base.updateChildren (rpg_scenes.js:260)
at Scene_Battle.Scene_Base.update (rpg_scenes.js:113)
at Scene_Battle.update (rpg_scenes.js:2259)
at Function.SceneManager.updateScene (rpg_managers.js:2024)
SceneManager.catchException @ rpg_managers.js:1949
SceneManager.update @ rpg_managers.js:1910
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907
requestAnimationFrame (async)
SceneManager.requestUpdate @ rpg_managers.js:1896
SceneManager.updateMain @ rpg_managers.js:1988
SceneManager.update @ rpg_managers.js:1907