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I have installed version 4-1.5, but when opening it, it always shows this error "The application server could not be contacted."
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Problems with pgAdmin 4 on MacBook Pro running macOS BigSur 11.2. 3. There is a known issue of pgAdmin freezing on launch on macOS BigSur because of a bug in Qt 5.13 and 5.14 versions. Till this issue is fixed, the work-around for this is to set the variable QT_MAC_WANTS_LAYER.
Right-click on the icon of pgAdmin and copy it. Then open the Application folder of macOs to paste into this folder. Now you can start pgAdmin by clicking its icon in Application.
Download the latest version of PG Admin 4 from https://www.pgadmin.org/download/pgadmin-4-macos/. Mount the Disk Image and click Agree at the prompt. Open the /Applications/Extensis/Universal Type Server/pgsql. 9/pgsql folder in a new window and drag the pgAdmin 4 Application into that folder.
I removed the local directory hidden and resolved:
$ cd ~
$ rm -r .pgadmin/
Note: macOS Sierra (10.12.6) and pgAdmin 4-1.6. Also you are going to loose configuration data like database list tree, et al.
The Databases will remain intact since you are modifying/deleting PgAdmin related data not any of Postgresql itself.
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