Original Message:
Sent: Thu August 21, 2025 05:44 AM
From: SRINIVASULU Naidu
Subject: Cognos Report Studio - New report - Type error:Cannot read Properties of Null(reading 'css rules')
Hi Patric,
I am able to open/Edit/Save existing reports in Report Studio and while creating new report at that time we are getting the error and it is a new installation and version is IBM Cognos Analytics 11.1.7
Thanks
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SRINIVASULU Naidu
Original Message:
Sent: Thu August 21, 2025 05:31 AM
From: Patrick Neveu
Subject: Cognos Report Studio - New report - Type error:Cannot read Properties of Null(reading 'css rules')
Do you have access to samples on your server? Can you open existing reports (samples or not)?
Is it a new install? Did you upgrade to a new fix pack?
Did you upgrade from an older version (v10.x or v11.0.x)?
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Patrick Neveu
BSL Consulting
IBM Champion
Original Message:
Sent: Thu August 21, 2025 05:16 AM
From: SRINIVASULU Naidu
Subject: Cognos Report Studio - New report - Type error:Cannot read Properties of Null(reading 'css rules')
Hi Patric,
I have Tried as you suggested but still getting the issue


Thanks
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SRINIVASULU Naidu
Original Message:
Sent: Thu August 21, 2025 05:06 AM
From: Patrick Neveu
Subject: Cognos Report Studio - New report - Type error:Cannot read Properties of Null(reading 'css rules')
Naidu,
Try to connect to http://<servername>:9300/bi/?perspective=home or your default "home page" for Cognos.
Remove everything after "=home" then add &factoryMode=true so the url shoud finish with ?perspective=home&factoryMode=true
Best regards,
------------------------------
Patrick Neveu
BSL Consulting
IBM Champion
Original Message:
Sent: Thu August 21, 2025 04:27 AM
From: SRINIVASULU Naidu
Subject: Cognos Report Studio - New report - Type error:Cannot read Properties of Null(reading 'css rules')
Hi Patrick,
I have opened the (InPrivate) mode and getting same issue and i have logged in as Cognosadmin , all the users are getting same issue
http(s)://<YourServerNameAndDomainHere>/bi/?factoryMode=true-- I have tried the factory default mode UR but getting '' Unauthorized access Exception" Error

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SRINIVASULU Naidu
Original Message:
Sent: Thu August 21, 2025 03:57 AM
From: Patrick Neveu
Subject: Cognos Report Studio - New report - Type error:Cannot read Properties of Null(reading 'css rules')
Hi Naidu,
Did you try to open Report in private (or InPrivate) mode? Did you try to remove any cookie? Do you have the same issue with all users?
You can quickly determine if extensions are the cause of any strange behavior by using a factory default mode URL to bypass all extensions:
http(s)://<YourServerNameAndDomainHere>/bi/?factoryMode=true
Best regards,
------------------------------
Patrick Neveu
BSL Consulting
IBM Champion
Original Message:
Sent: Wed August 20, 2025 12:19 PM
From: SRINIVASULU Naidu
Subject: Cognos Report Studio - New report - Type error:Cannot read Properties of Null(reading 'css rules')
Hi Team,
Getting below error when we click on new report in Report studio in Cognos 11.1.7, Could you please let me know the reason
Error Message Type error:Cannot read Properties of Null(reading 'css rules')

Thanks
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SRINIVASULU Naidu
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