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Data source page show white screen  show only menu
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 excuse me 
 I login by admin click menu data source. data source page show white screen, show only menu. I open data source page and wait 1 hour over . I'm Install mango on Ubuntu, mango full license. 1500 tags added. It's datalog 2 year ago. data point details show chart normal. How to fix it?Thanks. 
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 @fusepl 
 What version of Mango are you using: e.g. 3.7.7
 What version of Java are you using: Oracle Java 8, or Adopt OpenJDK 11
 What is your operating system: e.g. Windows x64, Ubuntu Linux 20.04
 How did you install Mango: e.g. install script, or manual install, updated from 3.6.0
 How did you start Mango: e.g. systemctl start mango, or ma.sh start
 Include the log file: post ma.log
 What browser are you using? e.g. Chrome 91.0.4472.124
