I just upgraded pgAdmin from 4.24 to 4.26 (python wheel install) and almost all result tabs are now blank. Neither Query nor Explain produce any result. I cleared all chrome cache (cookies, session/local storage), restarted the backend with no success.
I rolled back to 4.24 and everything works as before. Version: 4.26 Copyright (C) 2013 - 2020, The pgAdmin Development Team Python Version: 3.8.2 (default, Jul 16 2020, 14:00:26) [GCC 9.3.0] Flask Version: 1.0.2 Application Mode: Desktop Current User: pgadm...@pgadmin.org OS: "20.04.1 LTS (Focal Fossa)" The log is a repetition of the same error (see below) =============================================== 2020-10-08 12:25:39,125: ERROR flask.app: 400 Bad Request: The CSRF session token is missing. Traceback (most recent call last): File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 256, in protect validate_csrf(self._get_csrf_token()) File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 94, in validate_csrf raise ValidationError('The CSRF session token is missing.') wtforms.validators.ValidationError: The CSRF session token is missing. During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask/app.py", line 1811, in full_dispatch_request rv = self.preprocess_request() File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask/app.py", line 2087, in preprocess_request rv = func() File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 224, in csrf_protect self.protect() File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 259, in protect self._error_response(e.args[0]) File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 302, in _error_response raise CSRFError(reason) flask_wtf.csrf.CSRFError: 400 Bad Request: The CSRF session token is missing. 2020-10-08 13:01:37,714: ERROR flask.app: 400 Bad Request: The CSRF session token is missing. Traceback (most recent call last): File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 256, in protect validate_csrf(self._get_csrf_token()) File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 94, in validate_csrf raise ValidationError('The CSRF session token is missing.') wtforms.validators.ValidationError: The CSRF session token is missing. During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask/app.py", line 1811, in full_dispatch_request rv = self.preprocess_request() File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask/app.py", line 2087, in preprocess_request rv = func() File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 224, in csrf_protect self.protect() File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 259, in protect self._error_response(e.args[0]) File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 302, in _error_response raise CSRFError(reason) flask_wtf.csrf.CSRFError: 400 Bad Request: The CSRF session token is missing. 2020-10-08 13:01:42,712: ERROR flask.app: 400 Bad Request: The CSRF session token is missing. Traceback (most recent call last): File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 256, in protect validate_csrf(self._get_csrf_token()) File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 94, in validate_csrf raise ValidationError('The CSRF session token is missing.') wtforms.validators.ValidationError: The CSRF session token is missing. During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask/app.py", line 1811, in full_dispatch_request rv = self.preprocess_request() File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask/app.py", line 2087, in preprocess_request rv = func() File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 224, in csrf_protect self.protect() File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 259, in protect self._error_response(e.args[0]) File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 302, in _error_response raise CSRFError(reason) flask_wtf.csrf.CSRFError: 400 Bad Request: The CSRF session token is missing. 2020-10-08 13:01:44,035: ERROR flask.app: 400 Bad Request: The CSRF session token is missing. Traceback (most recent call last): File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 256, in protect validate_csrf(self._get_csrf_token()) File "/home/user/opt/pgadmin4/lib/python3.8/site-packages/flask_wtf/csrf.py", line 94, in validate_csrf raise ValidationError('The CSRF session token is missing.') wtforms.validators.ValidationError: The CSRF session token is missing. >