Subject Firebird 1.5 with Yii - table not found

I am trying to use Firebird 1.5 database with Yii with Yii-Firebird extension yii2-firebird | Extension | Yii PHP Framework

I can connect to both Firebird 1.5 and 2.1 databases, but only from 2.1 database I can read table data. When I am trying to read data from Firebird 1.5 database I receive message:


<name>Invalid Configuration</name>

<message>The table does not exist: BANKS</message>



As far as I know then 1.5 and 2.1 are greatly compatible with regard to third party frameworks and tools (e.g. IBX, BDE can work with both versions), so - are there solution for Yii and Firebird 1.5?