Waits for other background commands to be executed

[finndevs]

Steps to reproduce

1. Just installed with composer and activated the extension
2. The extension waits for other background commands to be executed
3. After clicking the connect button, a new about: blank page is displayed in chrome

Expected behaviour

The extension should be updated, I set cron to run on hosting and perform actions every 5 minutes.
After clicking the connect button, I should connect to https://flagrow.io

Actual behaviour

The extension waits for other background commands to be executed
After clicking the connect button, a new about: blank page is displayed in chrome

Configuration

Operating system:
Linux 4.14.11

Version of Bazaar: 0.4.0
Version of Flarum: 0.1.0-beta.9
Other extensions:
Flarum core 0.1.0-beta.9
PHP version: 7.3.9
Loaded extensions: Core, date, libxml, openssl, pcre, sqlite3, zlib, bcmath, bz2, calendar, ctype, curl, dom, hash, fileinfo, filter, ftp, gd, gettext, SPL, iconv, session, intl, json, mbstring, standard, mysqlnd, pcntl, mysqli, PDO, pdo_mysql, pdo_pgsql, pdo_sqlite, pgsql, Phar, posix, Reflection, imap, SimpleXML, soap, sockets, exif, tokenizer, xml, xmlreader, xmlrpc, xmlwriter, xsl, zip, memcached, imagick, redis, phalcon, ionCube Loader, Zend OPcache
+---------------------------------+-----------------+--------+
| Flarum Extensions | | |
+---------------------------------+-----------------+--------+
| ID | Version | Commit |
+---------------------------------+-----------------+--------+
| flarum-approval | v0.1.0-beta.8 | |
| flarum-emoji | v0.1.0-beta.8 | |
| flarum-lang-english | v0.1.0-beta.10 | |
| flarum-flags | v0.1.0-beta.9 | |
| flarum-mentions | v0.1.0-beta.9 | |
| flarum-statistics | v0.1.0-beta.9 | |
| flarum-sticky | v0.1.0-beta.9 | |
| flarum-subscriptions | v0.1.0-beta.9 | |
| flarum-suspend | v0.1.0-beta.9 | |
| flarum-tags | v0.1.0-beta.9 | |
| wiwatsrt-best-answer | v0.2.4 | |
| flagrow-ads | 0.2.4 | |
| fof-links | 0.2.1 | |
| fof-pages | 0.2.7 | |
| flarum-markdown | v0.1.0-beta.9 | |
| flarum-lock | v0.1.0-beta.9 | |
| flarum-likes | v0.1.0-beta.9 | |
| fof-drafts | 0.1.3 | |
| veriael-polish | v1.0.6.3 | |
| flagrow-terms | 0.3.1 | |
| fof-user-directory | 0.3.3 | |
| fof-formatting | 0.1.2 | |
| flagrow-upload | 0.7.1 | |
| fof-masquerade | 0.3.3 | |
| fof-reactions | 0.1.0 | |
| antoinefr-bbcode-fa | 0.2.1 | |
| clarkwinkelmann-circle-groups | 0.2.1 | |
| fof-socialprofile | 0.1.1 | |
| kvothe-reply-to-see | v0.1.2 | |
| flagrow-linguist | 0.3.1 | |
| michaelbelgium-discussion-views | v0.1.0-beta.8.2 | |
| jordanjay29-summaries | 0.3.1 | |
| reflar-level-ranks | 1.2.1 | |
| fof-secure-https | v0.1.0 | |
| flarum-bbcode | v0.1.0-beta.8 | |
| extiverse-bazaar | 0.4.0 | |
+---------------------------------+-----------------+--------+

Debug mode: off