Pgadmin4 does not start - Illegal instruction (core dumped)

[adasiko]

Can not run Pgadmin4 Desktop

 /usr/pgadmin4/venv/bin/python3 -s /usr/pgadmin4/web/pgAdmin4.py
Illegal instruction        (core dumped) /usr/pgadmin4/venv/bin/python3 -s /usr/pgadmin4/web/pgAdmin4.py

Does my CPU Intel i5-3450 CPU too old? Or something else?

• OS: Ubuntu 26.04
• pgAdmin version: 9.15
• Mode: Desktop
• Package type: DEB

[adasiko]

Full trace

$ PYTHONFAULTHANDLER=1 /usr/pgadmin4/venv/bin/python3 -s /usr/pgadmin4/web/pgAdmin4.py
Fatal Python error: Illegal instruction

Current thread 0x0000718a5539a200 [python3] (most recent call first):
  File "<frozen importlib._bootstrap>", line 491 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 1061 in exec_module
  File "<frozen importlib._bootstrap>", line 938 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 1342 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1371 in _find_and_load
  File "<frozen importlib._bootstrap>", line 491 in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1434 in _handle_fromlist
  File "/usr/pgadmin4/venv/lib/python3.14/site-packages/psycopg/pq/__init__.py", line 76 in import_from_libpq
  File "/usr/pgadmin4/venv/lib/python3.14/site-packages/psycopg/pq/__init__.py", line 114 in <module>
  File "<frozen importlib._bootstrap>", line 491 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 759 in exec_module
  File "<frozen importlib._bootstrap>", line 938 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 1342 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1371 in _find_and_load
  File "<frozen importlib._bootstrap>", line 491 in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1434 in _handle_fromlist
  File "/usr/pgadmin4/venv/lib/python3.14/site-packages/psycopg/__init__.py", line 9 in <module>
  File "<frozen importlib._bootstrap>", line 491 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 759 in exec_module
  File "<frozen importlib._bootstrap>", line 938 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 1342 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1371 in _find_and_load
  File "<frozen importlib._bootstrap>", line 491 in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1314 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1371 in _find_and_load
  File "/usr/pgadmin4/web/pgadmin/browser/server_groups/servers/__init__.py", line 18 in <module>
  File "<frozen importlib._bootstrap>", line 491 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 759 in exec_module
  File "<frozen importlib._bootstrap>", line 938 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 1342 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1371 in _find_and_load
  File "<frozen importlib._bootstrap>", line 491 in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1314 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 1371 in _find_and_load
  File "/usr/pgadmin4/web/pgadmin/__init__.py", line 487 in create_app
  File "/usr/pgadmin4/web/pgAdmin4.py", line 93 in <module>

Current thread's C stack trace (most recent call first):
  Binary file "/usr/pgadmin4/venv/bin/python3", at _Py_DumpStack+0x4a [0x476e25]
  Binary file "/usr/pgadmin4/venv/bin/python3" [0x504188]
  Binary file "/usr/lib/x86_64-linux-gnu/libc.so.6", at +0x45cb0 [0x718a55045cb0]
  Binary file "/usr/pgadmin4/venv/lib/python3.14/site-packages/psycopg_c/pq.cpython-314-x86_64-linux-gnu.so", at +0xca59 [0x718a4e435a59]
  Binary file "/usr/pgadmin4/venv/lib/python3.14/site-packages/psycopg_c/pq.cpython-314-x86_64-linux-gnu.so", at +0x10109 [0x718a4e439109]
  Binary file "/usr/pgadmin4/venv/bin/python3", at PyModule_ExecDef+0x97 [0x58a047]
  Binary file "/usr/pgadmin4/venv/bin/python3" [0x6a1544]
  Binary file "/usr/pgadmin4/venv/bin/python3", at _PyEval_EvalFrameDefault+0x485d [0x55132d]
  Binary file "/usr/pgadmin4/venv/bin/python3" [0x58c804]
  Binary file "/usr/pgadmin4/venv/bin/python3" [0x57691f]
  Binary file "/usr/pgadmin4/venv/bin/python3", at PyObject_CallMethodObjArgs+0xf7 [0x5caf67]
  Binary file "/usr/pgadmin4/venv/bin/python3" [0x6a8593]
  Binary file "/usr/pgadmin4/venv/bin/python3", at PyImport_ImportModuleLevelObject+0x74e [0x5c99de]
  Binary file "/usr/pgadmin4/venv/bin/python3", at _PyEval_EvalFrameDefault+0x485d [0x55132d]
  Binary file "/usr/pgadmin4/venv/bin/python3" [0x58c804]
  Binary file "/usr/pgadmin4/venv/bin/python3" [0x57691f]
  Binary file "/usr/pgadmin4/venv/bin/python3", at PyObject_CallMethodObjArgs+0xf7 [0x5caf67]
  Binary file "/usr/pgadmin4/venv/bin/python3", at PyImport_ImportModuleLevelObject+0xc27 [0x5c9eb7]
  Binary file "/usr/pgadmin4/venv/bin/python3", at _PyEval_EvalFrameDefault+0x6e20 [0x5538f0]
  Binary file "/usr/pgadmin4/venv/bin/python3", at PyEval_EvalCode+0x106 [0x547bd6]
  Binary file "/usr/pgadmin4/venv/bin/python3" [0x5e2b5b]
  Binary file "/usr/pgadmin4/venv/bin/python3", at _PyEval_EvalFrameDefault+0x485d [0x55132d]
  Binary file "/usr/pgadmin4/venv/bin/python3" [0x58c804]
  Binary file "/usr/pgadmin4/venv/bin/python3" [0x57691f]
  Binary file "/usr/pgadmin4/venv/bin/python3", at PyObject_CallMethodObjArgs+0xf7 [0x5caf67]
  Binary file "/usr/pgadmin4/venv/bin/python3" [0x6a8593]
  Binary file "/usr/pgadmin4/venv/bin/python3", at PyImport_ImportModuleLevelObject+0x74e [0x5c99de]
  Binary file "/usr/pgadmin4/venv/bin/python3", at _PyEval_EvalFrameDefault+0x485d [0x55132d]
  Binary file "/usr/pgadmin4/venv/bin/python3" [0x58c804]
  Binary file "/usr/pgadmin4/venv/bin/python3" [0x57691f]
  Binary file "/usr/pgadmin4/venv/bin/python3", at PyObject_CallMethodObjArgs+0xf7 [0x5caf67]
  Binary file "/usr/pgadmin4/venv/bin/python3", at PyImport_ImportModuleLevelObject+0xc27 [0x5c9eb7]
  <truncated rest of calls>

Extension modules: markupsafe._speedups, _brotli, charset_normalizer.md, charset_normalizer.cd, _cffi_backend, sqlalchemy.cyextension.collections, sqlalchemy.cyextension.immutabledict, sqlalchemy.cyextension.processors, sqlalchemy.cyextension.resultproxy, sqlalchemy.cyextension.util, greenlet._greenlet, psycopg_c.pq (total: 12)
Illegal instruction        (core dumped) PYTHONFAULTHANDLER=1 /usr/pgadmin4/venv/bin/python3 -s /usr/pgadmin4/web/pgAdmin4.py