Fatal error: Call to undefined method WP_Screen::is_block_editor() in D:\Hosting\11505129\html\wp-admin\admin-header.php on line 178
I am getting this error after updating my WordPress, can't login to admin.
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Do you have access to your web hosting / control panel? If so, maybe you could restore a backup or try my solution below– Remzi CavdarJan 9, 2019 at 6:17
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3 Answers
Corrupted files
If this happened during/after an update, the update may have not completed correctly. Try a manual update: https://codex.wordpress.org/Upgrading_WordPress#Manual_Update
wp-config.php
Your wp-config.php file might be empty for some reason. See: https://codex.wordpress.org/Editing_wp-config.php
answered Jan 9, 2019 at 6:15
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it is still not fixing the issue. I also tried to rename the plugins folder and the active theme folder. Any other suggestion? Apr 18, 2019 at 18:13
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@SantoshAchari Okay, Did you try downloading WordPress and uploading it over your existing installation? Apr 19, 2019 at 7:19
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1@SantoshAchari Than I do not know. You could also contact your hosting provider. May 11, 2019 at 6:58
If this happened during/after an update, the update might not have completed correctly. Try a manual update: https://codex.wordpress.org/Upgrading_WordPress#Manual_Update
try manual wordpress update: https://codex.wordpress.org/Upgrading_WordPress#Manual_Update manual updating fixes your problem
