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I have an old blog from college 4 years ago, and I haven’t updated WordPress since then. I want to update it to 4.9, but can’t get to the admin panel. Here are the error messages:
Warning: Illegal string offset ‘remember’ in /homepages/13/d478538409/htdocs/personal/pla/wp-includes/user.php on line 39
Warning: Cannot assign an empty string to a string offset in /homepages/13/d478538409/htdocs/personal/pla/wp-includes/user.php on line 39
Warning: Illegal string offset ‘user_login’ in /homepages/13/d478538409/htdocs/personal/pla/wp-includes/user.php on line 54
Fatal error: Uncaught Error: Cannot create references to/from string offsets in /homepages/13/d478538409/htdocs/personal/pla/wp-includes/user.php:54 Stack trace: #0 /homepages/13/d478538409/htdocs/personal/pla/wp-login.php(779): wp_signon(”, ”) #1 {main} thrown in /homepages/13/d478538409/htdocs/personal/pla/wp-includes/user.php on line 54
Is there any way to fix this and get in? I don’t want to lose the entries.
I’m using PHP 7.1 with WordPress 3.9.23