Fatal Errors!!!

Hello!

I just noticed that the system stopped working.  This is what the logs say,

In Follow Up Messages Log:
<div style="background:#ff9999"><p style="padding:10px;color:#fff">A fatal error has occurred. For more details please view "logs/fatal-errors.log".</div>

In General Errors:
[Error Code: 2] Use of undefined constant t - assumed 't' (this will throw an Error in a future version of PHP)
[Date/Time: 28 July 2019 @ 04:30AM]
[Error on line 507 in file /home/vperez69/public_html/postman/admin/control/system/ajax.php]
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In Fatal Errors:
[Error Code: 1] Allowed memory size of 134217728 bytes exhausted (tried to allocate 109430624 bytes)
[Date/Time: 28 July 2019 @ 04:36AM]
[Fatal error on line 243 in file /home/vperez69/public_html/postman/control/functions.php]
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