Thread: pgadmin4 3.0: OpenTagNotFoundError

After upgrading to pgadmin4 3.0 I am frequently greeted with this fatal error when trying to load pgadmin4:

[wsgi:error] mod_wsgi (pid=22889): Exception occurred processing WSGI script '/home/pgadmin/venv/lib/python2.7/site-packages/pgadmin4/pgAdmin4.wsgi'.

[wsgi:error] Traceback (most recent call last):

[wsgi:error]   File "/home/pgadmin/venv/local/lib/python2.7/site-packages/flask/app.py", line 1997, in __call__

[wsgi:error]     return self.wsgi_app(environ, start_response)

[wsgi:error]   File "/home/pgadmin/venv/local/lib/python2.7/site-packages/flask/app.py", line 1985, in wsgi_app

[wsgi:error]     response = self.handle_exception(e)

[wsgi:error]   File "/home/pgadmin/venv/local/lib/python2.7/site-packages/flask/app.py", line 1540, in handle_exception

[wsgi:error]     reraise(exc_type, exc_value, tb)

[wsgi:error]   File "/home/pgadmin/venv/local/lib/python2.7/site-packages/flask/app.py", line 1982, in wsgi_app

[wsgi:error]     response = self.full_dispatch_request()

[wsgi:error]   File "/home/pgadmin/venv/local/lib/python2.7/site-packages/flask/app.py", line 1615, in full_dispatch_request

[wsgi:error]     return self.finalize_request(rv)

[wsgi:error]   File "/home/pgadmin/venv/local/lib/python2.7/site-packages/flask/app.py", line 1632, in finalize_request

[wsgi:error]     response = self.process_response(response)

[wsgi:error]   File "/home/pgadmin/venv/local/lib/python2.7/site-packages/flask/app.py", line 1856, in process_response

[wsgi:error]     response = handler(response)

[wsgi:error]   File "/home/pgadmin/venv/local/lib/python2.7/site-packages/flask_htmlmin.py", line 35, in response_minify

[wsgi:error]     self.html_minify.minify(response.get_data(as_text=True))

[wsgi:error]   File "/home/pgadmin/venv/local/lib/python2.7/site-packages/htmlmin/main.py", line 162, in minify

[wsgi:error]     self.input(*input)

[wsgi:error]   File "/home/pgadmin/venv/local/lib/python2.7/site-packages/htmlmin/main.py", line 174, in input

[wsgi:error]     self._parser.feed(i)

[wsgi:error]   File "/home/pgadmin/venv/local/lib/python2.7/site-packages/htmlmin/python3html/parser.py", line 125, in feed

[wsgi:error]     self.goahead(0)

[wsgi:error]   File "/home/pgadmin/venv/local/lib/python2.7/site-packages/htmlmin/python3html/parser.py", line 185, in goahead

[wsgi:error]     k = self.parse_starttag(i)

[wsgi:error]   File "/home/pgadmin/venv/local/lib/python2.7/site-packages/htmlmin/python3html/parser.py", line 359, in parse_starttag

[wsgi:error]     self.handle_starttag(tag, attrs)

[wsgi:error]   File "/home/pgadmin/venv/local/lib/python2.7/site-packages/htmlmin/parser.py", line 278, in handle_starttag

[wsgi:error]     self._in_pre_tag -= self._close_tags_up_to(t[0])

[wsgi:error]   File "/home/pgadmin/venv/local/lib/python2.7/site-packages/htmlmin/parser.py", line 261, in _close_tags_up_to

[wsgi:error]     raise OpenTagNotFoundError()

[wsgi:error] OpenTagNotFoundError

The error is intermittent, it seems that by restart apache you can sometimes make it work but right now I seem to be in a situation where I can't get pgadmin4 to start at all.

System details:

root@dgilman:/# cat /etc/debian_version

9.4

mod_wsgi for python 2.7 configuration:

WSGIDaemonProcess pgadmin processes=1 threads=10 user=pgadmin group=pgadmin python-home=/home/pgadmin/venv

WSGIScriptAlias /pgadmin /home/pgadmin/venv/lib/python2.7/site-packages/pgadmin4/pgAdmin4.wsgi

<Directory /home/pgadmin/venv/lib/python2.7/site-packages/pgadmin4>

AuthType Basic

AuthName pgadmin4

AuthUserFile /etc/apache2/htpasswds

Require user asdfjkl

WSGIProcessGroup pgadmin

WSGIApplicationGroup %{GLOBAL}

        </Directory>

pip freeze output:

alembic==0.9.5

attrs==16.3.0

Babel==2.3.4

backports.csv==1.0.5

bcrypt==3.1.2

beautifulsoup4==4.4.1

blinker==1.4

chardet==2.3.0

click==6.6

colorama==0.3.7

constantly==15.1.0

cryptography==1.7.1

defusedxml==0.4.1

enum34==1.1.6

extras==1.0.0

feedparser==5.1.3

fixtures==3.0.0

Flask==0.12.2

Flask-Babel==0.11.1

Flask-BabelEx==0.9.3

Flask-Gravatar==0.5.0

Flask-HTMLmin==1.3.2

Flask-Login==0.3.2

Flask-Mail==0.9.1

Flask-Migrate==2.1.1

Flask-Paranoid==0.2.0

Flask-Principal==0.4.0

Flask-Script==2.0.6

Flask-Security==3.0.0

Flask-SQLAlchemy==2.3.2

Flask-WTF==0.14.2

fpconst==0.7.2

html5lib==1.0.1

htmlmin==0.1.11

icalendar==3.6.1

idna==2.2

importlib==1.0.4

incremental==16.10.1

ipaddress==1.0.17

isodate==0.5.4

itsdangerous==0.24

Jinja2==2.7.3

keyring==10.1

keyrings.alt==1.3

linecache2==1.0.0

lxml==3.7.1

Mako==1.0.7

MarkupSafe==0.23

mysqlclient==1.3.7

passlib==1.7.1

pbr==3.1.1

pgadmin4==3.0

pkg-resources==0.0.0

psycopg2==2.7.3.2

pyasn1==0.1.9

pyasn1-modules==0.0.7

pycrypto==2.6.1

Pygments==2.2.0

pygobject==3.22.0

pylibacl==0.5.3

pyOpenSSL==16.2.0

pyparsing==2.1.10

pyrsistent==0.14.2

pyspatialite==3.0.1

python-dateutil==2.7.3

python-editor==1.0.3

python-mimeparse==1.6.0

pytz==2018.3

pyxattr==0.6.0

pyxdg==0.25

rdflib==4.2.1

rdiff-backup==1.2.8

SecretStorage==2.3.1

service-identity==16.0.0

simplejson==3.13.2

six==1.11.0

SOAPpy==0.12.22

SPARQLWrapper==1.7.6

speaklater==1.3

SQLAlchemy==1.2.7

sqlparse==0.2.4

testtools==2.3.0

traceback2==1.4.0

Twisted==16.6.0

unittest2==1.1.0

virtualenv==15.1.0

webencodings==0.5

Werkzeug==0.9.6

wokkel==0.7.1

wstools==0.4.3

WTForms==2.1

zope.interface==4.3.2

--

David Gilman
:DG<