-1 error appearing when trying to update event Post date Home › Forums › Calendar Products › Events Calendar PRO › -1 error appearing when trying to update event This topic has 0 replies, 3 voices, and was last updated 8 years ago by Support Droid. Viewing 1 post (of 1 total) Author Posts February 19, 2018 at 7:34 am #1457572 Support DroidKeymaster This support thread is private. Author Posts Viewing 1 post (of 1 total) The topic ‘-1 error appearing when trying to update event’ is closed to new replies. → Please verify your API key is correctly entered on the settings