Update of MetaSlider broke site

I am updating my WP core and plugins on a local staging site.
The site i need to update was not updated regularly and I therefore have an old configuration of WP (5.1.8), Apache (2.2), PHP (5.3.13) and many plugins will also require updates. Therefore I will proceed in steps.
I Will only discuss here the update of a plug-in which broke my staging site.

Configuration tested:
MetaSlider : 3.24.0 (updated from 3.10.2)
WordPress core: 5.1.12
Apache: 2.2
PHP: 5.3.13`
Step 1:

Successfully updated core WP 5.1.8 -> 5.1.12
Successfully activated and updated plug-in MetaSLider 3.10.2 -> 3.24.0 from back-end
However Front end AND back end broken after update of plug in.
Errors displayed in browser are also saved in apache log file:

[Mon Jan 10 12:26:58 2022] [error] [client ::1] PHP Parse error: syntax error, unexpected ‘[‘ in C:\\wamp\\www\\WordpressStep1\\wp-content\\plugins\\ml-slider\\admin\\lib\\extendify-notice.php on line 8
[Mon Jan 10 12:26:58 2022] [error] [client ::1] PHP Stack trace:
[Mon Jan 10 12:26:58 2022] [error] [client ::1] PHP 1. {main}() C:\\wamp\\www\\WordpressStep1\\index.php:0
[Mon Jan 10 12:26:58 2022] [error] [client ::1] PHP 2. require() C:\\wamp\\www\\WordpressStep1\\index.php:17
[Mon Jan 10 12:26:58 2022] [error] [client ::1] PHP 3. require_once() C:\\wamp\\www\\WordpressStep1\\wp-blog-header.php:13
[Mon Jan 10 12:26:58 2022] [error] [client ::1] PHP 4. require_once() C:\\wamp\\www\\WordpressStep1\\wp-load.php:37
[Mon Jan 10 12:26:58 2022] [error] [client ::1] PHP 5. require_once() C:\\wamp\\www\\WordpressStep1\\wp-config.php:72
[Mon Jan 10 12:26:58 2022] [error] [client ::1] PHP 6. do_action() C:\\wamp\\www\\WordpressStep1\\wp-settings.php:374
[Mon Jan 10 12:26:58 2022] [error] [client ::1] PHP 7. WP_Hook->do_action() C:\\wamp\\www\\WordpressStep1\\wp-includes\\plugin.php:465
[Mon Jan 10 12:26:58 2022] [error] [client ::1] PHP 8. WP_Hook->apply_filters() C:\\wamp\\www\\WordpressStep1\\wp-includes\\class-wp-hook.php:310
[Mon Jan 10 12:26:58 2022] [error] [client ::1] PHP 9. call_user_func_array() C:\\wamp\\www\\WordpressStep1\\wp-includes\\class-wp-hook.php:286
[Mon Jan 10 12:26:58 2022] [error] [client ::1] PHP 10. MetaSliderPlugin->setup() C:\\wamp\\www\\WordpressStep1\\wp-includes\\class-wp-hook.php:286`

Can I fix this by delete the meta slider sub dir in the plug-in map of wp-Content? and update the database manually, or is that a bad idea? What would you recommend? I no longer can access wp-admin.

• This topic was modified 2 years, 3 months ago by christiane100. Reason: try to upload the file giving error but cannot see attachment button on form

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