Error message

• Notice: Trying to access array offset on value of type bool in rtc_addons_entity_view() (line 240 of /app/src/sites/all/modules/custom/rtc_addons/rtc_addons.module).
• Notice: Trying to access array offset on value of type null in rtc_addons_entity_view() (line 240 of /app/src/sites/all/modules/custom/rtc_addons/rtc_addons.module).