Product:
Planning Analytics 2.0.9
Microsoft Windows 2016 server

Problem:
After upgrade to Planning Analytics 2.0.9, user of TM1 Application web (contributor) get a blank page or below error in web browser when they try to open a link.

Error:

Solution:
Clear the web browser cache before you surf to PMPSVC webpage.

You can also try a script to clean the browser cache, please test the script in your lab first.
Below script will clean Chrome browser cache:

REM echo %username% > C:\ProgramData\user.$$$

ECHO       Clearing Chrome cache
taskkill /F /IM “chrome.exe”

REM Set /p uname=< C:\ProgramData\user.$$$
REM set ChromeDataDir=C:\Users\%uname%\AppData\Local\Google\Chrome\User Data\Default

set ChromeDataDir=C:\Users\%USERNAME%\AppData\Local\Google\Chrome\User Data\Default
set ChromeCache=%ChromeDataDir%\Cache
del /q /s /f “%ChromeCache%\*.*”
del /q /f “%ChromeDataDir%\*Cookies*.*”

set ChromeDataDir=C:\Users\%USERNAME%\Local Settings\Application Data\Google\Chrome\User Data\Default
set ChromeCache=%ChromeDataDir%\Cache
del /q /s /f “%ChromeCache%\*.*
del /q /f “%ChromeDataDir%\*Cookies*.*”
ECHO      Clearing Chrome cache DONE

More Information:
https://community.spiceworks.com/topic/2018333-help-me-complete-batch-file-script-to-clear-google-chrome-cache-only
https://stackoverflow.com/questions/25210330/script-for-clearing-chrome-or-firefox-cache-on-windows