Plugin breaks on PHP 71+

it looks like authors gave up reading this forum. Ok.
I got the same problem, plugin doesn’t work on PHP 7.1, and I know how to fix it.

1. Open the file
\wp-content\plugins\events-maker\includes\class-query.php

2. From line 516 and below you’ll see a few (8) pieces of code like this:

$meta_args[] = array(
'key'		 => $keys['start'],
'value'		 => date( 'Y-m-d H:i:s', strtotime( $query->query_vars['event_start_after'] . $sa_date ) ),
'compare'	 => ($query->query_vars['event_date_range'] === 'between' ? '>=' : '<='),
'type'		 => 'DATETIME'
);

3. You shoud add the string
$meta_args = array();
before every string
$meta_args[] = array(

4. Save the file.
Now plugin is compatable with php 7.1

If you wanna read explanation why it didn’t work:
https://wordpress.org/support/topic/fatal-error-uncaught-error-operator-not-supported-for-strings/

Enjoy!