Answered leftJoin issue - Not unique table/alias error

$c = $modx->newQuery('productInfo');
$c->leftJoin('productLine','ProductLine', 'ProductLine.internalKey=productInfo.line_id');
foreach($searchArr as $searchTerm){
 $whereArray[]=array('prod_no:LIKE' => '%'.$searchTerm.'%',
    'OR:options:LIKE' => '%'.$searchTerm.'%');   
}
$c->where(array($whereArray),xPDOQuery::SQL_OR);
$products = $modx->getCollectionGraph('productInfo',array('ProductLine'=>array()), $c);

<object class="productLine" table="rli_product_line" extends="xPDOSimpleObject" >
	<field key="name" dbtype="varchar" precision="255" phptype="string" null="false" default="" index="index" />
	<field key="priority" dbtype="integer" precision="10" phptype="integer" attributes="unsigned" null="true" default="100"/>
	<field key="description" dbtype="mediumtext" phptype="string" null="true" default=""/>
	<field key="disabled" dbtype="tinyint" precision="1" attributes="unsigned" phptype="integer" null="false" default="0" />
	<field key="video" dbtype="varchar" precision="255" phptype="string" null="true" default=""/>
	<field key="published" dbtype="tinyint" precision="1" attributes="unsigned" phptype="integer" null="false" default="0" />
	<field key="createdby" dbtype="int" precision="10" phptype="integer" null="false" default="0" />
	<field key="createdon" dbtype="datetime" phptype="datetime" null="false" />
	<field key="deleted" dbtype="tinyint" precision="1" attributes="unsigned" phptype="integer" null="false" default="0" />
	<field key="deletedon" dbtype="datetime" phptype="datetime" null="false" />
	<field key="deletedby" dbtype="int" precision="10" phptype="integer" null="false" default="0" />
	<field key="publishedon" dbtype="datetime" phptype="datetime" null="false" />
	<field key="publishedby" dbtype="int" precision="10" phptype="integer" null="false" default="0" />
	<index alias="PRIMARY" name="PRIMARY" primary="true" unique="true">
		<column key="id" collation="A" null="false" />
	</index>
<composite alias="Product" class="productInfo" local="id" foreign="line_id" cardinality="many" owner="local"/>
</object>
<object class="productInfo" table="rli_products" extends="xPDOSimpleObject" >
	<field key="prod_no" dbtype="varchar" precision="255" phptype="string" null="false" default="" index="index"/>
	<field key="options" dbtype="mediumtext" phptype="string" null="true" default=""/>
	<field key="qty" dbtype="integer" precision="10" phptype="integer" attributes="unsigned" null="true" default=""/>
	<field key="so" dbtype="integer" precision="10" phptype="integer" attributes="unsigned" null="true" default=""/>
	<field key="so_text" dbtype="varchar" precision="255" phptype="string" null="true" default="" index="index"/>
	<field key="grp_id" dbtype="int" precision="10" attributes="unsigned" phptype="integer" null="false" default="0"/>
	<field key="line_id" dbtype="int" precision="10" attributes="unsigned" phptype="integer" null="false" default="0"/>
	<field key="category" dbtype="varchar" precision="255" phptype="string" null="false" default=""/>
	<field key="colors" dbtype="tinyinteger" attributes="unsigned" phptype="integer" null="true" default=""/>
	<field key="priority" dbtype="integer" precision="10" phptype="integer" attributes="unsigned" null="true" default="100"/>
	<field key="disabled" dbtype="tinyint" precision="1" attributes="unsigned" phptype="integer" null="false" default="0" />
	<field key="sample" dbtype="tinyint" precision="1" attributes="unsigned" phptype="integer" null="false" default="0" />
	<field key="sample_qty" dbtype="tinyint" precision="4" attributes="unsigned" phptype="integer" null="false" default="0" />
	<field key="createdby" dbtype="int" precision="10" phptype="integer" null="false" default="0" />
	<field key="createdon" dbtype="datetime" phptype="datetime" null="false" />
	<index alias="PRIMARY" name="PRIMARY" primary="true" unique="true">
		<column key="id" collation="A" null="false" />
	</index>
	<aggregate alias="ProductLine" class="productLine" local="line_id" foreign="id" cardinality="one" owner="foreign"/>
</object>

 [2014-04-23 13:15:27] (ERROR @ /index.php) Error 42000 executing query: SELECT `productInfo`.`id` AS `productInfo_id`, `productInfo`.`prod_no` AS `productInfo_prod_no`, `productInfo`.`options` AS `productInfo_options`, `productInfo`.`qty` AS `productInfo_qty`, `productInfo`.`so` AS `productInfo_so`, `productInfo`.`so_text` AS `productInfo_so_text`, `productInfo`.`grp_id` AS `productInfo_grp_id`, `productInfo`.`line_id` AS `productInfo_line_id`, `productInfo`.`category` AS `productInfo_category`, `productInfo`.`colors` AS `productInfo_colors`, `productInfo`.`priority` AS `productInfo_priority`, `productInfo`.`disabled` AS `productInfo_disabled`, `productInfo`.`sample` AS `productInfo_sample`, `productInfo`.`sample_qty` AS `productInfo_sample_qty`, `productInfo`.`createdby` AS `productInfo_createdby`, `productInfo`.`createdon` AS `productInfo_createdon`, `ProductLine`.`id` AS `ProductLine_id`, `ProductLine`.`name` AS `ProductLine_name`, `ProductLine`.`priority` AS `ProductLine_priority`, `ProductLine`.`description` AS `ProductLine_description`, `ProductLine`.`disabled` AS `ProductLine_disabled`, `ProductLine`.`video` AS `ProductLine_video`, `ProductLine`.`published` AS `ProductLine_published`, `ProductLine`.`createdby` AS `ProductLine_createdby`, `ProductLine`.`createdon` AS `ProductLine_createdon`, `ProductLine`.`deleted` AS `ProductLine_deleted`, `ProductLine`.`deletedon` AS `ProductLine_deletedon`, `ProductLine`.`deletedby` AS `ProductLine_deletedby`, `ProductLine`.`publishedon` AS `ProductLine_publishedon`, `ProductLine`.`publishedby` AS `ProductLine_publishedby` FROM `modx_rli_products` AS `productInfo` LEFT JOIN `modx_rli_product_line` `ProductLine` ON ProductLine.internalKey=productInfo.line_id LEFT JOIN `modx_rli_product_line` `ProductLine` ON `productInfo`.`line_id` = `ProductLine`.`id` WHERE  ( `productInfo`.`prod_no` LIKE ? OR `productInfo`.`options` LIKE ? )  ORDER BY `productInfo`.`id` ASC  - Array
(
    [0] => 42000
    [1] => 1066
    [2] => Not unique table/alias: 'ProductLine'
)