Try upgrading Wekan to Node v6.12 and Meteor 1.6, still using MongoDB 3.2.18.

Standalone Wekan seems to work, needs testing.
This does not fix crash bug of MongoDB 3.4.x.
This version does not yet work on Sandstorm.

.meteor/.finished-upgraders

@@ -15,3 +15,4 @@ notices-for-facebook-graph-api-2
 1.4.0-remove-old-dev-bundle-link
 1.4.1-add-shell-server-package
 1.4.3-split-account-service-packages
+1.5-add-dynamic-import-package

.meteor/packages

@@ -3,13 +3,13 @@
 # 'meteor add' and 'meteor remove' will edit this file for you,
 # but you can also edit it by hand.
 
-meteor-base@1.0.4
+meteor-base@1.2.0
 
 # Build system
-ecmascript@0.7.2
-stylus@2.513.9
-standard-minifier-css@1.3.4
-standard-minifier-js@2.0.0
+ecmascript@0.9.0
+stylus@2.513.13
+standard-minifier-css@1.3.5
+standard-minifier-js@2.2.0
 mquandalle:jade
 
 # Polyfills
@@ -24,11 +24,11 @@ dburles:collection-helpers
 idmontie:migrations
 matb33:collection-hooks
 matteodem:easy-search
-mongo@1.1.16
+mongo@1.3.0
 mquandalle:collection-mutations
 
 # Account system
-accounts-password@1.3.5
+accounts-password@1.5.0
 kenton:accounts-sandstorm
 service-configuration@1.0.11
 useraccounts:unstyled
@@ -38,9 +38,9 @@ useraccounts:flow-routing
 check@1.2.5
 jquery@1.11.10
 random@1.0.10
-reactive-dict@1.1.8
+reactive-dict@1.2.0
 session@1.1.7
-tracker@1.1.2
+tracker@1.1.3
 underscore@1.0.10
 3stack:presence
 alethes:pages
@@ -48,7 +48,6 @@ arillo:flow-router-helpers
 audit-argument-checks@1.0.7
 kadira:blaze-layout
 kadira:dochead
-meteorhacks:fast-render
 meteorhacks:picker
 meteorhacks:subs-manager
 mquandalle:autofocus
@@ -56,7 +55,7 @@ mquandalle:moment
 ongoworks:speakingurl
 raix:handlebar-helpers
 tap:i18n
-http
+http@1.3.0
 
 # UI components
 blaze
@@ -74,9 +73,11 @@ templates:tabs
 verron:autosize
 simple:json-routes
 rajit:bootstrap3-datepicker
-kadira:flow-router
-shell-server@0.2.3
+shell-server@0.3.0
 simple:rest-accounts-password
 useraccounts:core
 email@1.2.3
 horka:swipebox
+dynamic-import
+staringatlights:fast-render
+staringatlights:flow-router

.meteor/release

@@ -1 +1 @@
-METEOR@1.4.4.1
+METEOR@1.6

.meteor/versions

@@ -1,23 +1,23 @@
-3stack:presence@1.0.5
-accounts-base@1.2.16
-accounts-password@1.3.5
+3stack:presence@1.1.2
+accounts-base@1.4.0
+accounts-password@1.5.0
 aldeed:collection2@2.10.0
 aldeed:collection2-core@1.2.0
 aldeed:schema-deny@1.1.0
 aldeed:schema-index@1.1.1
 aldeed:simple-schema@1.5.3
 alethes:pages@1.8.6
-allow-deny@1.0.9
+allow-deny@1.1.0
 arillo:flow-router-helpers@0.5.2
 audit-argument-checks@1.0.7
 autoupdate@1.3.12
-babel-compiler@6.18.2
-babel-runtime@1.0.1
+babel-compiler@6.24.7
+babel-runtime@1.1.1
 base64@1.0.10
 binary-heap@1.0.10
 blaze@2.3.2
 blaze-tools@1.0.10
-boilerplate-generator@1.0.11
+boilerplate-generator@1.3.1
 caching-compiler@1.1.9
 caching-html-compiler@1.1.2
 callback-hook@1.0.10
@@ -40,19 +40,23 @@ cfs:upload-http@0.0.20
 cfs:worker@0.1.4
 check@1.2.5
 chuangbo:cookie@1.1.0
-coffeescript@1.12.3_1
-cottz:publish-relations@2.0.7
+coffeescript@1.12.7_3
+coffeescript-compiler@1.12.7_3
+cottz:publish-relations@2.0.8
 dburles:collection-helpers@1.1.0
-ddp@1.2.5
-ddp-client@1.3.4
-ddp-common@1.2.8
+ddp@1.4.0
+ddp-client@2.2.0
+ddp-common@1.3.0
 ddp-rate-limiter@1.0.7
-ddp-server@1.3.14
+ddp-server@2.1.1
 deps@1.0.12
 diff-sequence@1.0.7
-ecmascript@0.7.3
-ecmascript-runtime@0.3.15
-ejson@1.0.13
+dynamic-import@0.2.1
+ecmascript@0.9.0
+ecmascript-runtime@0.5.0
+ecmascript-runtime-client@0.5.0
+ecmascript-runtime-server@0.5.0
+ejson@1.1.0
 email@1.2.3
 es5-shim@4.6.15
 fastclick@1.0.13
@@ -62,40 +66,39 @@ horka:swipebox@1.0.2
 hot-code-push@1.0.4
 html-tools@1.0.11
 htmljs@1.0.11
-http@1.2.12
+http@1.3.0
 id-map@1.0.9
 idmontie:migrations@1.0.3
 jquery@1.11.10
 kadira:blaze-layout@2.3.0
 kadira:dochead@1.5.0
 kadira:flow-router@2.12.1
-kenton:accounts-sandstorm@0.6.0
+kenton:accounts-sandstorm@0.7.0
 launch-screen@1.1.1
 livedata@1.0.18
-localstorage@1.0.12
-logging@1.1.17
+localstorage@1.2.0
+logging@1.1.19
 matb33:collection-hooks@0.8.4
 matteodem:easy-search@1.6.4
 mdg:validation-error@0.5.1
-meteor@1.6.1
-meteor-base@1.0.4
+meteor@1.8.2
+meteor-base@1.2.0
 meteor-platform@1.2.6
 meteorhacks:aggregate@1.3.0
 meteorhacks:collection-utils@1.2.0
-meteorhacks:fast-render@2.16.0
-meteorhacks:inject-data@2.0.0
 meteorhacks:meteorx@1.4.1
 meteorhacks:picker@1.0.3
 meteorhacks:subs-manager@1.6.4
 meteorspark:util@0.2.0
 minifier-css@1.2.16
-minifier-js@2.0.0
+minifier-js@2.2.2
 minifiers@1.1.8-faster-rebuild.0
-minimongo@1.0.21
+minimongo@1.4.2
 mobile-status-bar@1.0.14
-modules@0.8.2
-modules-runtime@0.7.10
-mongo@1.1.16
+modules@0.11.0
+modules-runtime@0.9.1
+mongo@1.3.0
+mongo-dev-server@1.1.0
 mongo-id@1.0.6
 mongo-livedata@1.0.12
 mousetrap:mousetrap@1.4.6_1
@@ -108,8 +111,8 @@ mquandalle:jquery-ui-drag-drop-sort@0.2.0
 mquandalle:moment@1.0.1
 mquandalle:mousetrap-bindglobal@0.0.1
 mquandalle:perfect-scrollbar@0.6.5_2
-npm-bcrypt@0.9.2
-npm-mongo@2.2.24
+npm-bcrypt@0.9.3
+npm-mongo@2.2.33
 observe-sequence@1.0.16
 ongoworks:speakingurl@1.1.0
 ordered-dict@1.0.9
@@ -119,13 +122,13 @@ peerlibrary:blaze-components@0.15.1
 peerlibrary:computed-field@0.6.1
 peerlibrary:reactive-field@0.3.0
 perak:markdown@1.0.5
-promise@0.8.8
+promise@0.10.0
 raix:eventemitter@0.1.3
 raix:handlebar-helpers@0.2.5
-rajit:bootstrap3-datepicker@1.6.4
+rajit:bootstrap3-datepicker@1.7.1
 random@1.0.10
 rate-limit@1.0.8
-reactive-dict@1.1.8
+reactive-dict@1.2.0
 reactive-var@1.0.11
 reload@1.1.11
 retry@1.0.9
@@ -134,26 +137,29 @@ seriousm:emoji-continued@1.4.0
 service-configuration@1.0.11
 session@1.1.7
 sha@1.0.9
-shell-server@0.2.3
+shell-server@0.3.0
 simple:authenticate-user-by-token@1.0.1
 simple:json-routes@2.1.0
 simple:rest-accounts-password@1.1.2
 simple:rest-bearer-token-parser@1.0.1
 simple:rest-json-error-handler@1.0.1
-softwarerero:accounts-t9n@1.3.9
+softwarerero:accounts-t9n@1.3.11
 spacebars@1.0.15
-spacebars-compiler@1.1.2
+spacebars-compiler@1.1.3
 srp@1.0.10
-standard-minifier-css@1.3.4
-standard-minifier-js@2.0.0
-stylus@2.513.9
+standard-minifier-css@1.3.5
+standard-minifier-js@2.2.3
+staringatlights:fast-render@2.16.5
+staringatlights:flow-router@2.12.2
+staringatlights:inject-data@2.0.5
+stylus@2.513.13
 tap:i18n@1.8.2
 templates:tabs@2.3.0
 templating@1.3.2
-templating-compiler@1.3.2
+templating-compiler@1.3.3
 templating-runtime@1.3.2
 templating-tools@1.1.2
-tracker@1.1.2
+tracker@1.1.3
 ui@1.0.13
 underscore@1.0.10
 url@1.1.0
@@ -161,6 +167,6 @@ useraccounts:core@1.14.2
 useraccounts:flow-routing@1.14.2
 useraccounts:unstyled@1.14.2
 verron:autosize@3.0.8
-webapp@1.3.15
+webapp@1.4.0
 webapp-hashing@1.0.9
 zimme:active-route@2.3.2

package.json

@@ -20,15 +20,17 @@
   },
   "homepage": "https://wekan.github.io",
   "devDependencies": {
-    "eslint": "^2.0.0"
+    "eslint": "^4.11.0"
   },
   "dependencies": {
-    "babel-runtime": "^6.23.0",
-    "bcrypt": "^1.0.2",
+    "babel-runtime": "^6.26.0",
+    "bcrypt": "^1.0.3",
     "bson": "^1.0.4",
-    "es6-promise": "^4.1.0",
-    "meteor-node-stubs": "^0.2.6",
+    "es6-promise": "^4.1.1",
+    "fibers": "^2.0.0",
+    "meteor-node-stubs": "^0.3.2",
     "os": "^0.1.1",
-    "xss": "^0.3.3"
+    "phantomjs-prebuilt": "^2.1.16",
+    "xss": "^0.3.4"
   }
 }