Triggered a fatal error

Hi

I have a problem to activate plugin “wp travel engine”
there’s error: Plugin could not be activated because it triggered a fatal error.

Parse error: syntax error, unexpected ‘[‘, expecting ‘)’ in /home/h516292/domains/siereisen.com/public_html/wp-content/plugins/wp-travel-engine/public/class-wp-travel-engine-public.php on line 702

I check its source code , they ask me to contact support

Anyone can help please
<div class=”error unexpected-error” style=”display: none; “><p>An unexpected error occurred. Something may be wrong with ww.wp.xz.cn or this server’s configuration. If you continue to have problems, please try the support forums.</p></div>
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