Weathermap editor permission issue

hi there,
i have the same exact problem than:

weathermapeditor
from the editor, my maps are read only.
but i can modify the conf files with putty. (which is a bit tedious)

i tried the given solution, but the problem remains.
any clue?
thanks

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Component Version
LibreNMS 1.57-94-g1ab645c75
DB Schema 2019_04_22_220000_update_route_table (147)
PHP 7.2.24-0ubuntu0.18.04.1
MySQL 10.1.43-MariaDB-0ubuntu0.18.04.1
RRDTool 1.7.0
SNMP NET-SNMP 5.7.3

====================================

[OK] Composer Version: 1.8.5
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct