Error message

Notice: Undefined index: exception in calendar_plugin_display_attachment->display_granularity() (line 70 of /home/commanda/public_html/sites/all/modules/contrib/calendar/includes/calendar_plugin_display_attachment.inc).
Notice: Undefined index: exception in calendar_plugin_display_attachment->display_granularity() (line 70 of /home/commanda/public_html/sites/all/modules/contrib/calendar/includes/calendar_plugin_display_attachment.inc).
Notice: Undefined index: exception in calendar_plugin_display_attachment->display_granularity() (line 70 of /home/commanda/public_html/sites/all/modules/contrib/calendar/includes/calendar_plugin_display_attachment.inc).
Notice: Undefined index: exception in calendar_plugin_display_attachment->display_granularity() (line 70 of /home/commanda/public_html/sites/all/modules/contrib/calendar/includes/calendar_plugin_display_attachment.inc).
Notice: Undefined index: exception in calendar_plugin_display_attachment->display_granularity() (line 70 of /home/commanda/public_html/sites/all/modules/contrib/calendar/includes/calendar_plugin_display_attachment.inc).

Status message

Debug:

'Exception: SQLSTATE[21000]: Cardinality violation: 1241 Operand should contain 1 column(s)'

in views_plugin_query_default->execute() (line 1377 of /home/commanda/public_html/sites/all/modules/contrib/views/plugins/views_plugin_query_default.inc).