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<b>Warning</b>:  Undefined array key "device_id" in <b>/home/wcserver/public_html/habit_breaker/pi_classes/sync_log.php</b> on line <b>15</b><br />
<br />
<b>Warning</b>:  Undefined array key "user_id" in <b>/home/wcserver/public_html/habit_breaker/pi_classes/sync_log.php</b> on line <b>15</b><br />
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<b>Fatal error</b>:  Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1 in /home/wcserver/public_html/habit_breaker/pi_classes/AbstractDB.php:17
Stack trace:
#0 /home/wcserver/public_html/habit_breaker/pi_classes/AbstractDB.php(17): mysqli_query(Object(mysqli), 'SELECT * from s...')
#1 /home/wcserver/public_html/habit_breaker/pi_classes/sync_log.php(16): AbstractDB-&gt;query('SELECT * from s...')
#2 /home/wcserver/public_html/habit_breaker/actions/fetch_data_from_server.php(10): sync_log-&gt;querySyncLogs()
#3 {main}
  thrown in <b>/home/wcserver/public_html/habit_breaker/pi_classes/AbstractDB.php</b> on line <b>17</b><br />