I am using Zen Cart Ver. 1.3.9h
I tried to install the Column Layout Grid Module, but I am getting the following errors while executing SQL query:
I tried to find answer to this issue, but failed. Kindly help me out.Failed: 2
Error ERROR: Cannot insert configuration_key "" because it already exists
Error ERROR: Cannot insert configuration_key "" because it already exists
Warning Note: 2 statements ignored. See "upgrade_exceptions" table for additional details.
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