MATLAB: Confusing error while using Table

errornamestablevariables

I am trying to make a simple table so that I can access some data by using names instead of a numeric index of a cell.
locationsTable = table(splitLocations, 'VariableNames', headerNames);
headerNames = {'rawData', 'testConfig', 'efiData', 'bonusData'};
splitLocations = {2, 49, 74, 142};
However, when I try to run this, I get the error
Error using setVarNames (line 35) The VariableNames property must contain one name for each variable in the table.
Error in table (line 304) t = setVarNames(t,vnames); % error if invalid, duplicate, or empty
This is confusing me, since I have a name for each variable, and none of them are invalid, duplicate or empty. I am unsure what I am doing wrong and what I need to change so that it works. Any help would be appreciated.

locationsTable = table(splitLocations{:}, 'VariableNames', headerNames);