deadbrainvivek

Dear Prestashop Experts, I am Vivek, From India. I have been working on Prestashop for a long time now and have created stores for my clients using prestashop since 2013. I am having a strange problem and need your help. When I am creating multistore in prestashop version 1.5 (all sub versions), 1.6 ( All sub versions) and 1.7 (All sub versions), I am getting 500 Internal server error. Attacjed below is the log segment from my Local apache instance. The log is from default install of Prestashop with 1 multi store. I have a customer's site as well using Prestashop version 1.6, where I have the similar error message. I tried to set prestashop to debug mode but still goes to the 500 Internal server page without giving me any information. I turned on all the features in apache, php and mysql logging, but can't get any further information. Can any one suggest how doI go about resolving or understand what issue I have. If I comment the below line in the .htaccess the sub store shows as 404 not found.. My first guess was this HTACESS entry, but this entry is created by prestashop automatically.. Kindly suggest how can I proceed Awaiting a quick response Vivek