plugin swiper, if delete layers entry and validate get console error and error displaying summary tree

[Pewillia]

av-main.js:2 TypeError: Cannot read properties of undefined (reading 'id')
at av-main.js:2:996525
at Object.validateModel (av-main.js:2:997171)
at av-main.js:2:2272182
at u.$broadcast (av-main.js:2:727575)
at av-main.js:2:1067776
at l.validateForm (av-main.js:2:980165)
at fn (eval at compile (av-main.js:2:729401), :4:174)
at i (av-main.js:2:775173)
at u.$eval (av-main.js:2:726133)
at u.$apply (av-main.js:2:726378)