Error message

• Warning: Invalid argument supplied for foreach() in spnet_custom_block_view() (line 941 of D:\Websites\SPNetSQLSites\bakfar\home\sites\all\modules\spnet_custom\spnet_custom.module).
• Warning: uasort() expects parameter 1 to be array, null given in spnet_custom_block_view() (line 955 of D:\Websites\SPNetSQLSites\bakfar\home\sites\all\modules\spnet_custom\spnet_custom.module).
• Warning: Invalid argument supplied for foreach() in spnet_custom_block_view() (line 961 of D:\Websites\SPNetSQLSites\bakfar\home\sites\all\modules\spnet_custom\spnet_custom.module).