Error after upgrade from V5.3.5 to V5.4.1 - by: nicop

Getting error. Any advice
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2016-07-07 12:58:26.272 ===== TRACE =====
2016-07-07 12:58:26.273 ===== TRACE ===== DATABASE UPDATE COMPLETED TO VERSION V5.4.1
2016-07-07 12:58:26.273 ===== TRACE =====
2016-07-07 12:58:26.273 ===== TRACE ===== =====================================
2016-07-07 12:58:26.273 ===== TRACE =====
2016-07-07 12:59:40.377 ===== TRACE ===== NEW CONNECTED USER 'admin'
2016-07-07 13:00:12.806 ***** ERROR ***** ERROR *****
2016-07-07 13:00:12.806 ***** ERROR ***** on file '/home/xxx/public_html/xxxx/projeqtor/view/objectDetail.php' at line (1936)
2016-07-07 13:00:12.806 ***** ERROR ***** cause = ob_end_flush(): failed to delete and flush buffer. No buffer to delete or flush