Script error

I tried to run the report, it's been advised the following error

the code in line 376 & 377 are as following:

o.TableCell(vBusinessRules,50,"Arial", 11, Constants.C_BLACK, Constants.C_WHITE, 0, Constants.FMT_VTOP|Constants.FMT_LEFT, 2);
o.TableCell(vBusinessRuleDesc,50,"Arial", 11, Constants.C_BLACK, Constants.C_WHITE, 0, Constants.FMT_VTOP|Constants.FMT_LEFT, 2);

Anyone knows how to fix this?

Thanks in advance!