update to laravel 5.7 and try getting autologin saved

vendor/symfony/css-selector/XPath/Extension/AttributeMatchingExtension.php

@@ -86,7 +86,7 @@ class AttributeMatchingExtension extends AbstractExtension
         return $xpath->addCondition($value ? sprintf(
             '%1$s and substring(%1$s, string-length(%1$s)-%2$s) = %3$s',
             $attribute,
-            strlen($value) - 1,
+            \strlen($value) - 1,
             Translator::getXpathLiteral($value)
         ) : '0');
     }