How to fix An error of type E_COMPILE_ERROR

An error of type E_COMPILE_ERROR was caused in line 57 of the file /var/www/wp-content/plugins/nextend/library/database/wordpress.php. Error message: Array and string offset access syntax with curly braces is no longer supported

The error message you encountered indicates that you are using an outdated syntax for accessing array elements with curly braces, which is no longer supported in the version of PHP you are using. This error specifically occurred on line 57 of the file “/var/www/wp-content/plugins/nextend/library/database/wordpress.php.”

To resolve this issue, you need to modify the code in that file to use the correct syntax for accessing array elements. The curly brace syntax for array access is no longer valid.

Here’s an example of the old syntax that you need to update:

$array = ['key' => 'value'];
echo $array{'key'};

The correct syntax for accessing array elements is to use square brackets:

$array = ['key' => 'value'];
echo $array['key'];

You should search for similar instances of curly brace syntax in the file “/var/www/wp-content/plugins/nextend/library/database/wordpress.php” and update them accordingly.

Remember to make a backup of the file before making any changes, and if you’re not familiar with PHP or programming, it might be a good idea to seek assistance from a developer to ensure the modifications are done correctly.