Cannot get report to run, dataTemplate query issues

Question

Report was running fine until I turned one of my data modules from a SQL Query to a Data Template. I've narrowed it down to the query causing the error(Index: 0, Size: 0????), any ideas what specifically is causing the error? Perhaps the union or decode?
<dataTemplate name="imapctMatrix" dataSourceRef="asetdev" defaultPackage="pkg_ea_engine">
<parameters>
<parameter name="EAD_ID" dataType="number" defaultValue="0"/>
</parameters>
<dataQuery>
<sqlstatement name="Q1"><![CDATA[
SELECT EPJ_ID, env_name ||' - '||LAYER_NAME layer_name,
DECODE(MAX(decode(color,'WHITE', 0,'RED',99,'YELLOW',98,'GREEN',97)),0,'NONE',99,'HIGH',98,'MODERATE',97,'LOW') COLOR,
ENV_NAME,
ALT_NAME,
DECODE(ALT_NAME,'PROPOSED ACTION',0,'NO ACTION',99,ALT_NUM)
FROM temp_ea_impact_rep
WHERE (EPJ_ID = (select EPJ_ID from EAD_DESCRIPTIVE_INFO WHERE EAD_ID = :EAD_ID))
GROUP BY EPJ_ID,ALT_NAME, ENV_NAME, LAYER_NAME,ALT_NUM
union
SELECT distinct EPJ_ID, env_name ||' - '||LAYER_NAME layer_name, 'NONE' COLOR, ENV_NAME, 'NO ACTION',99
FROM temp_ea_impact_rep
WHERE (EPJ_ID = (select EPJ_ID from EAD_DESCRIPTIVE_INFO WHERE EAD_ID = :EAD_ID))
and color <> 'WHITE'
GROUP BY EPJ_ID, LAYER_NAME, COLOR, ENV_NAME, 'NO ACTION'
order by 2
]]></sqlstatement>
</dataQuery>
<dataTrigger name="beforeReport" source="pkg_ea_engine.createeaimpact(:EAD_ID)"/>
</dataTemplate>

Answer 1

color <> 'WHITE' was causing the error