Syntax error

Hello,

I've created several command blocks that all work, except for one. Each time the error message Syntax error: Unexpected "#": at ">> # << ###########" is displayed.

The command command is / execute @p [tag = crewmate, scores = \
{amongus = 5}] ~ ~ ~ title @a title Player was not an Imposter

After entering and setting the command, the command input window changes to ################################## ########################### and the syntax error message appears.

The command works fine with the block before and after. I also tried a structure block in which I copied / saved the working command block and then only changed the value (in the example from 6 to 5) - the error message also appears. Please help.

Same error appears when it try a simple /tp command like /tp @all x y z (in my case -103 71 36) - a second command block with other coordinates works perfectly.