Unhandled internal error loop browsing excel

I am a new user to psychopy and have encountered a problem when trying to browse an excel file in a loop condition. Non of the excel files were able to browse in my computer.
this is the description below:
Traceback (most recent call last):
File “D:\Psycopypy\lib\site-packages\psychopy\app\builder\dialogs_init_.py”, line 1605, in onBrowseTrialsFile
File “D:\Psycopypy\lib\site-packages\psychopy\data\utils.py”, line 338, in importConditions
trialList, fieldNames = _attemptImport(fileName=fileName)
File “D:\Psycopypy\lib\site-packages\psychopy\data\utils.py”, line 256, in _attemptImport
trialList, fieldNames = pandasToDictList(trialsArr)
File “D:\Psycopypy\lib\site-packages\psychopy\data\utils.py”, line 301, in pandasToDictList
_assertValidVarNames(fieldNames, fileName)
File “D:\Psycopypy\lib\site-packages\psychopy\data\utils.py”, line 276, in _assertValidVarNames
(fileName, msg, os.linesep * 2, name))
psychopy.exceptions.ConditionsImportError: Conditions file C:\Users\masako\Desktop\專題1092\chingsheet.xlsx: Parameters (column headers) cannot contain punctuation or spaces

“unscramble question”

I’m not really good at this and need some help out of this, thanks a lot!

Do you have a column called unscramble question in your Excel file?

It can’t have a space so you could change it to unscramble_question

I’ve changed it and it worked, thanks a lot!