ISSUE WHEN LOGGIN IN

Error Details
=============
An error of type E_ERROR was caused in line 82 of the file wp-content/plugins/all-404-redirect-to-homepage/all-404-redirect-to-homepage.php. Error message: Uncaught TypeError: fread(): Argument #1 ($stream) must be of type resource, bool given in wp-content/plugins/all-404-redirect-to-homepage/all-404-redirect-to-homepage.php:82

Stack trace:
#0 wp-content/plugins/all-404-redirect-to-homepage/all-404-redirect-to-homepage.php(82): fread(false, 1020)
#1 wp-content/plugins/all-404-redirect-to-homepage/all-404-redirect-to-homepage.php(99): p404_check_default_permalink()
#2 wp-includes/class-wp-hook.php(307): p404_header_code(”)
# 3wp-includes/class-wp-hook.php(331): WP_Hook->apply_filters(NULL, Array)
#4 wp-includes/plugin.php(474): WP_Hook->do_action(Array)
#5 wp-admin/admin-header.php(163): do_action(‘admin_head’)
#6 wp-admin/index.php(137): require_once(‘/nas/content/li…’)
#7 {main}
thrown