angular.min.js:127 TypeError: Cannot read property 'offsetLeft' of null
    at C (Scheduler.services.js?lm=1567515136:1)
    at angular.min.js:169
    at Tg.completeTask (angular.min.js:166)
    at angular.min.js:52
(anonymous) @ angular.min.js:127
(anonymous) @ angular.min.js:99
(anonymous) @ angular.min.js:169
Tg.completeTask @ angular.min.js:166
(anonymous) @ angular.min.js:52
setTimeout (async)
Ag.h.defer @ angular.min.js:51
f @ angular.min.js:169
addAttendee @ Scheduler.services.js?lm=1567515136:1
fn @ VM432:4
d.<computed> @ angular.min.js:91
O @ angular-material.min.js:7
$digest @ angular.min.js:151
$apply @ angular.min.js:155
(anonymous) @ angular.min.js:169
Tg.completeTask @ angular.min.js:166
(anonymous) @ angular.min.js:52
setTimeout (async)
Ag.h.defer @ angular.min.js:51
f @ angular.min.js:169
(anonymous) @ angular-material.min.js:7
$digest @ angular.min.js:151
$apply @ angular.min.js:155
$$debounceViewValueCommit @ angular.min.js:310
$setViewValue @ angular.min.js:310
l @ angular.min.js:189
sg @ angular.min.js:40
d @ angular.min.js:40
angular.min.js:127 TypeError: Cannot read property 'offsetLeft' of null
    at C (Scheduler.services.js?lm=1567515136:1)
    at angular.min.js:169
    at Tg.completeTask (angular.min.js:166)
    at angular.min.js:52 "Possibly unhandled rejection: {}"
(anonymous) @ angular.min.js:127
(anonymous) @ angular.min.js:99
g @ angular.min.js:139
$digest @ angular.min.js:151
$apply @ angular.min.js:155
(anonymous) @ angular.min.js:169
Tg.completeTask @ angular.min.js:166
(anonymous) @ angular.min.js:52
setTimeout (async)
Ag.h.defer @ angular.min.js:51
f @ angular.min.js:169
addAttendee @ Scheduler.services.js?lm=1567515136:1
fn @ VM432:4
d.<computed> @ angular.min.js:91
O @ angular-material.min.js:7
$digest @ angular.min.js:151
$apply @ angular.min.js:155
(anonymous) @ angular.min.js:169
Tg.completeTask @ angular.min.js:166
(anonymous) @ angular.min.js:52
setTimeout (async)
Ag.h.defer @ angular.min.js:51
f @ angular.min.js:169
(anonymous) @ angular-material.min.js:7
$digest @ angular.min.js:151
$apply @ angular.min.js:155
$$debounceViewValueCommit @ angular.min.js:310
$setViewValue @ angular.min.js:310
l @ angular.min.js:189
sg @ angular.min.js:40
d @ angular.min.js:40
angular.min.js:127 TypeError: Cannot read property 'offsetLeft' of null
    at C (Scheduler.services.js?lm=1567515136:1)
    at angular.min.js:169
    at Tg.completeTask (angular.min.js:166)
    at angular.min.js:52
(anonymous) @ angular.min.js:127
(anonymous) @ angular.min.js:99
(anonymous) @ angular.min.js:169
Tg.completeTask @ angular.min.js:166
(anonymous) @ angular.min.js:52
setTimeout (async)
Ag.h.defer @ angular.min.js:51
f @ angular.min.js:169
addAttendee @ Scheduler.services.js?lm=1567515136:1
fn @ VM432:4
d.<computed> @ angular.min.js:91
O @ angular-material.min.js:7
$digest @ angular.min.js:151
(anonymous) @ angular-material.min.js:7
(anonymous) @ angular.min.js:169
Tg.completeTask @ angular.min.js:166
(anonymous) @ angular.min.js:52
setTimeout (async)
Ag.h.defer @ angular.min.js:51
f @ angular.min.js:169
nextTick @ angular-material.min.js:7
(anonymous) @ angular-material.min.js:7
sg @ angular.min.js:40
d @ angular.min.js:40
m.mouseUp @ angular-material.min.js:7
fn @ VM361:4
e @ angular.min.js:198
$eval @ angular.min.js:154
$apply @ angular.min.js:154
(anonymous) @ angular.min.js:198
sg @ angular.min.js:40
d @ angular.min.js:40
angular.min.js:127 TypeError: Cannot read property 'offsetLeft' of null
    at C (Scheduler.services.js?lm=1567515136:1)
    at angular.min.js:169
    at Tg.completeTask (angular.min.js:166)
    at angular.min.js:52 "Possibly unhandled rejection: {}"
(anonymous) @ angular.min.js:127
(anonymous) @ angular.min.js:99
g @ angular.min.js:139
$digest @ angular.min.js:151
$apply @ angular.min.js:155
(anonymous) @ angular.min.js:169
Tg.completeTask @ angular.min.js:166
(anonymous) @ angular.min.js:52
setTimeout (async)
Ag.h.defer @ angular.min.js:51
f @ angular.min.js:169
addAttendee @ Scheduler.services.js?lm=1567515136:1
fn @ VM432:4
d.<computed> @ angular.min.js:91
O @ angular-material.min.js:7
$digest @ angular.min.js:151
(anonymous) @ angular-material.min.js:7
(anonymous) @ angular.min.js:169
Tg.completeTask @ angular.min.js:166
(anonymous) @ angular.min.js:52
setTimeout (async)
Ag.h.defer @ angular.min.js:51
f @ angular.min.js:169
nextTick @ angular-material.min.js:7
(anonymous) @ angular-material.min.js:7
sg @ angular.min.js:40
d @ angular.min.js:40
m.mouseUp @ angular-material.min.js:7
fn @ VM361:4
e @ angular.min.js:198
$eval @ angular.min.js:154
$apply @ angular.min.js:154
(anonymous) @ angular.min.js:198
sg @ angular.min.js:40
d @ angular.min.js:40