One of my players can't see maps all of the sudden

[nemonobody2092]

On of my players can see the grid but not the map. Have no clue at all, what could it be? Posted a photo of what he see.

[LordEntrails]

Has this worked before for this player? Does it happen to all maps you share?
Does the map have any special characters? Does the map name end in a space? Can you try with a simple map name that only has English/Latin letters with no spaces?
Does if resolve if the player clears their cache and rejoins?

[Geometer]

Did you give the map enough time to load? Is it a published module map or your own?

I'm running Curse of Strahd which is well-supplied with maps, but I've added a couple of my own and when they were sent to the players during our last session they took a long time to load - much longer than the published maps, and several minutes in the case of one player - and they looked much like your example while they were loading. So it might just be a case of waiting a bit longer?

[Fear Grounds]

I had this issue last night. All of my player's could see the map except for one. The one player that could not see the map had selected multiple characters, as he was wanting to change his character out. It turns out that the active character he had selected was not on the map, so all he could see was the black screen.

Solutions: 1: Clear ownership of all characters by the affected player, and have them reclaim just the one they actually need to play the game.

2: Make sure that all the players know how to switch between multiple characters if allowing them to access more than one at a time. Important if they are controlling NPC's as well.