First argument must be a string array, character vector, or cell array of character vectors. 'Prefix' value must start with a letter, must contain only alphanumeric characters and underscores, and must not be a MATLAB keyword. 'ReplacementStyle' must be 'delete', 'underscore', or 'hex'. {0} values not supported for first input argument. Prefix length must be less than or equal to NAMELENGTHMAX.