this is my problem trying to play the game for the first time
First, pls uninstall addons if you are using them.
Second, right click on Tree of Savior on game list, choose Properties and choose Verify Integrity of game files.
Third, after verifying process finishes. Start game and wait for it to update.
did it
still doesnt work
mine usually solves itself after I start up the game 
do you mean steam addons?