Error "this.pull is null" if I change menu tab when file is uploading

Hello,

It is difficult to do a snippet but I can try to explain my problem.

I have an application with menus on left with for example , one menu “upload voice message” and a menu “network”.

In voice message menu ,I upload a big file and before the end of uploading , I click on menu network , I have this error

Uncaught TypeError: this.pull is null
getItem datastore.js:182
Nr datastore.js:757
$updateProgress uploader.js:242
send uploaddriver.js:315
C helpers.js:97
O ajax.js:151
post ajax.js:186
sendSyncRequest utils.js:908
loadFromDb utils.js:135
$oninit network_config.js:349
run_handlers core.js:369
create core.js:414
subui core.js:90
render_stack core.js:217
execCb require.js:29
check require.js:18
enable require.js:23
u require.js:8
emit require.js:23
v require.js:7
emit require.js:23
check require.js:19
enable require.js:23
u require.js:8
emit require.js:23
v require.js:7
emit require.js:23
check require.js:19
enable require.js:23
init require.js:17
E require.js:14
completeLoad require.js:28
onScriptLoad require.js:29
load require.js:34
load require.js:29
load require.js:18
fetch require.js:17
check require.js:19
enable require.js:23
enable require.js:27
enable require.js:23
u require.js:8
v require.js:7
enable require.js:22
init require.js:17
E require.js:14
completeLoad require.js:28
onScriptLoad require.js:29
load require.js:34
load require.js:29
load require.js:18
fetch require.js:17
check require.js:19
enable require.js:23
enable require.js:27
enable require.js:23
u require.js:8
v require.js:7
enable require.js:22
init require.js:17
j require.js:26
setTimeout handlerg.nextTick< require.js:32
j require.js:26
requirejs require.js:31
render_stack core.js:214
render_stack core.js:220
execCb require.js:29
check require.js:18
enable require.js:23
init require.js:17
j require.js:26
setTimeout handler
g.nextTick< require.js:32
j require.js:26
requirejs require.js:31
render_stack core.js:214
router core.js:290
run routie.js:8
c routie.js:8
reload routie.js:8

Any ideas ?

Thanks