| ( ! ) Fatal error: Uncaught Error: Class "PKP\observers\events\UsageEvent" not found in /home/journals/public_html/jau/classes/observers/events/UsageEvent.php on line 29 | ||||
|---|---|---|---|---|
| ( ! ) Error: Class "PKP\observers\events\UsageEvent" not found in /home/journals/public_html/jau/classes/observers/events/UsageEvent.php on line 29 | ||||
| Call Stack | ||||
| # | Time | Memory | Function | Location |
| 1 | 0.0004 | 8086176 | {main}( ) | .../UsageEvent.php:0 |