Couldn't lock the file.

Stack Trace:

File: /srv/openjournal/sitios/www.revcimeq.sld.cu/lib/pkp/classes/scheduledTask/ScheduledTask.inc.php line 146
Function: ScheduledTask->addExecutionLogEntry("https://revcimeq.sld.cu")

File: /srv/openjournal/sitios/www.revcimeq.sld.cu/plugins/generic/acron/AcronPlugin.inc.php line 256
Function: ScheduledTask->execute()

File: (unknown) line (unknown)
Function: AcronPlugin->shutdownFunction()