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The argument type 'String?' can't be assigned to the parameter type 'String' & a value type list...
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flutter The argument type 'String?' can't be assigned to the parameter type 'String'
a value of type 'list ' can't be assigned to a variable of type list
The method '[]' can't be unconditionally invoked because the receiver can be 'null'.
#flutter
a value of type 'list ' can't be assigned to a variable of type list
The method '[]' can't be unconditionally invoked because the receiver can be 'null'.
#flutter