Deleted old version of Amp and installed new version which automatically activated thru the Xstore plugin installer. Got an error that took down my whole site that said there was an error in Line 21 of update.php in the plugin directory. Promptly deleted via file manager access and site is working.
Error Details
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An error of type E_PARSE was caused in line 21 of the file /home/customer/www/annsanicolajewelry.com/public_html/wp-content/plugins/xstore-amp/admin/update.php. Error message: syntax error, unexpected ‘string’ (T_STRING), expecting function (T_FUNCTION) or const (T_CONST)