Mongo 4.4 does not work. Mongo 4.2 and 3.x works.

Thanks to GuidoDr for info.

Related #3247

docker-compose.yml

@@ -93,7 +93,9 @@ services:
     #-------------------------------------------------------------------------------------
     # ==== MONGODB AND METEOR VERSION ====
     # a) For Wekan Meteor 1.8.x version at master branch, use mongo 4.x
-    image: mongo:latest
+    # DOES NOT WORK: mongo 4.4, see https://github.com/wekan/wekan/issues/3247
+    # WORKS: mongo 3.x and 4.2
+    image: mongo:4.2
     # b) For Wekan Meteor 1.6.x version at devel branch.
     # Only for Snap and Sandstorm while they are not upgraded yet to Meteor 1.8.x
     #image: mongo:3.2.21