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Dear Community,

 

I started experiencing an internal server error 500 when I was upgrading from prestashop1.5 to 1.5.6.2. I accidentally install the 1 click upgrade without configuring it and now i have  a blank page with this error: Eror PHP Fatal error: Call to undefined method AdminSelfUpgrade::addJS().

 

I tried disabling, uninstalling the module but the error persists. I am not sure how to solve it. I am new to this. 

 

Please help.

 

Thanks.

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