Error [WB0097]:

Syntax
#1

Hello there!
Can someone help me with this error message i have in my designer? I check every questionnaires but didn’t see any mistakes

[WB0097]:Only the following characters may be used in the questionnaire title: A…Z a…z 0…9 ( ) \ / _ - and space.

#2

in the top right corder open settings panel and change questionnaire title to contain only allowed symbols