add gradio version warning

modules/errors.py

@@ -84,3 +84,53 @@ def run(code, task):
         code()
     except Exception as e:
         display(task, e)
+
+
+def check_versions():
+    from packaging import version
+    from modules import shared
+
+    import torch
+    import gradio
+
+    expected_torch_version = "2.0.0"
+    expected_xformers_version = "0.0.20"
+    expected_gradio_version = "3.39.0"
+
+    if version.parse(torch.__version__) < version.parse(expected_torch_version):
+        print_error_explanation(f"""
+You are running torch {torch.__version__}.
+The program is tested to work with torch {expected_torch_version}.
+To reinstall the desired version, run with commandline flag --reinstall-torch.
+Beware that this will cause a lot of large files to be downloaded, as well as
+there are reports of issues with training tab on the latest version.
+
+Use --skip-version-check commandline argument to disable this check.
+        """.strip())
+
+    if shared.xformers_available:
+        import xformers
+
+        if version.parse(xformers.__version__) < version.parse(expected_xformers_version):
+            print_error_explanation(f"""
+You are running xformers {xformers.__version__}.
+The program is tested to work with xformers {expected_xformers_version}.
+To reinstall the desired version, run with commandline flag --reinstall-xformers.
+
+Use --skip-version-check commandline argument to disable this check.
+            """.strip())
+
+    if gradio.__version__ != expected_gradio_version:
+        print_error_explanation(f"""
+You are running gradio {gradio.__version__}.
+The program is designed to work with gradio {expected_gradio_version}.
+Using a different version of gradio is extremely likely to break the program.
+
+Reasons why you have the mismatched gradio version can be:
+  - you use --skip-install flag.
+  - you use webui.py to start the program instead of launch.py.
+  - an extension installs the incompatible gradio version.
+
+Use --skip-version-check commandline argument to disable this check.
+        """.strip())
+

webui.py

@@ -14,7 +14,6 @@ from typing import Iterable
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 from fastapi.middleware.gzip import GZipMiddleware
-from packaging import version
 
 import logging
 
@@ -50,6 +49,7 @@ startup_timer.record("setup paths")
 import ldm.modules.encoders.modules  # noqa: F401
 startup_timer.record("import ldm")
 
+
 from modules import extra_networks
 from modules.call_queue import wrap_gradio_gpu_call, wrap_queued_call, queue_lock  # noqa: F401
 
@@ -58,9 +58,14 @@ if ".dev" in torch.__version__ or "+git" in torch.__version__:
     torch.__long_version__ = torch.__version__
     torch.__version__ = re.search(r'[\d.]+[\d]', torch.__version__).group(0)
 
+from modules import shared
+
+if not shared.cmd_opts.skip_version_check:
+    errors.check_versions()
+
 import modules.codeformer_model as codeformer
 import modules.gfpgan_model as gfpgan
-from modules import shared, sd_samplers, upscaler, extensions, localization, ui_tempdir, ui_extra_networks, config_states
+from modules import sd_samplers, upscaler, extensions, localization, ui_tempdir, ui_extra_networks, config_states
 import modules.face_restoration
 import modules.img2img
 
@@ -130,37 +135,6 @@ def fix_asyncio_event_loop_policy():
     asyncio.set_event_loop_policy(AnyThreadEventLoopPolicy())
 
 
-def check_versions():
-    if shared.cmd_opts.skip_version_check:
-        return
-
-    expected_torch_version = "2.0.0"
-
-    if version.parse(torch.__version__) < version.parse(expected_torch_version):
-        errors.print_error_explanation(f"""
-You are running torch {torch.__version__}.
-The program is tested to work with torch {expected_torch_version}.
-To reinstall the desired version, run with commandline flag --reinstall-torch.
-Beware that this will cause a lot of large files to be downloaded, as well as
-there are reports of issues with training tab on the latest version.
-
-Use --skip-version-check commandline argument to disable this check.
-        """.strip())
-
-    expected_xformers_version = "0.0.20"
-    if shared.xformers_available:
-        import xformers
-
-        if version.parse(xformers.__version__) < version.parse(expected_xformers_version):
-            errors.print_error_explanation(f"""
-You are running xformers {xformers.__version__}.
-The program is tested to work with xformers {expected_xformers_version}.
-To reinstall the desired version, run with commandline flag --reinstall-xformers.
-
-Use --skip-version-check commandline argument to disable this check.
-            """.strip())
-
-
 def restore_config_state_file():
     config_state_file = shared.opts.restore_config_state_file
     if config_state_file == "":
@@ -248,7 +222,6 @@ def initialize():
     fix_asyncio_event_loop_policy()
     validate_tls_options()
     configure_sigint_handler()
-    check_versions()
     modelloader.cleanup_models()
     configure_opts_onchange()