<b-card v-for='callType in callTypes' no-body class="mb-1">
<b-table striped hover :items="{{callType.lineType}}">
</b-table>
</b-card>
When each callType is the name of an array.
callTypes: [mainLine, etc]
mainLine: [firstline: number, etc etc]
Error: vue.runtime.esm.js?2b0e:619 [Vue warn]: Invalid prop: type check failed for prop "items". Expected Array, Function, got String with value "mainLine".
If your array is declared in data() then you could access it this way:
<b-card v-for='callType in callTypes' no-body class="mb-1">
<b-table striped hover :items="$data[callType.lineType]">
</b-table>
</b-card>