Here are two different syntaxes for tp or teleport:

teleport <destination: target> [checkForBlocks: Boolean]

teleport <victim: target> <destination: target> [checkForBlocks: Boolean]

however, if I type the following command, guess which one it will be resolved into

/tp @s true

Unexpectedly, it is resolved as the second syntax, and "true" is regarded as a player's name.

and of course, "true" can indeed be a player name under particular conditions

So the two syntaxes conflict.

Please remove the second argument in the first syntax.