May-31-2017 19:26:45.702 -04:00 info [MinecraftBridge] Got request for alias #_minecraft_myMcServer.com_40040
May-31-2017 19:26:45.713 -04:00 error [MinecraftBridge] Failed to create room for alias #_minecraft_myMcServer.com_40040
May-31-2017 19:26:45.714 -04:00 error [MinecraftBridge] TypeError: Cannot read property 'substring' of undefined
A
I've tracked it down to MinecraftBridge.js's _onAliasQuery. It gets to return server.ping().then(pingInfo => {, calls remoteRoom.set(... and seems to throw that exception on return util.uploadContentFromDataUri.... and never gets to then(avatarMxc=>...
https://matrix.to/#/!VExuChwLUaNnIVBRtd:t2l.io/$1496278576734374SpTQD:matrix.org