Runtime Errors in Python and C++ Eat Hours of Dev Time
11 posts since Jul 2026, all from stackoverflow.com.
“[unanswered, 47 views] I'm trying to use both immer and devtools middleware at the same time. I encapsulated immer inside devtools, like it is described here , but I'm running into an error: Cannot assign an argument of type "StateCreator , unknown][]], { activities: {}…”
“I'm trying to install Wfuzz package with the Pip tool but whenever i try i get this error: Collecting pycurl [46 lines of output] note: This error originates from a subprocess, and is likely not a problem with pip. ERROR: Failed”
“[unanswered, 15 views] The exact error: "RandomForestClassifier instance is not fitted yet. Call 'fit' with appropriate arguments before using this estimator." The code: import pandas as pd import numpy as np df=pd.read_csv('500hits.csv',encoding='latin-1') df.head()…”
Several developers are experiencing frustrating errors while working with various programming languages and frameworks, including C++, Python, JavaScript, Laravel, Feign, and Tesseract. These errors range from compile-time issues to runtime exceptions and unexpected behavior, consuming valuable time and hindering productivity.
SOURCES (11)
“[unanswered, 15 views] The exact error: "RandomForestClassifier instance is not fitted yet. Call 'fit' with appropriate arguments before using this estimator." The code: import pandas as pd import numpy as np df=pd.read_csv('500hits.csv',encoding='latin-1') df.head() df=df.drop(columns=['PLAYER','CS']) X=df.iloc[:,0:13] y=df.iloc[:,13] from sklearn.model_selection import train_test_split X_train, X_test, y_train, y_test =…”
“I'm building a small game in C++ with raylib. I have a Game class that owns a Player object and a screenWindow object. My goal is for screenWindow to access the same Player instance that is created in Game. However, when I compile the project, I get the following error: include/screenWindow.h:55:5: error: 'Player' does not name a type 55 | Player activePlayer; | ^~~~~~ The error occurs while compiling screenWindow.h, even though Player is defined in Character.h. My code: Game.h #include "screenW”
“[unanswered, 47 views] I'm trying to use both immer and devtools middleware at the same time. I encapsulated immer inside devtools, like it is described here , but I'm running into an error: Cannot assign an argument of type "StateCreator , unknown][]], { activities: {}; currentActivityId: undefined; addActivity: (activity: Activity) => void; removeActivity: (activityId: string) => void; setColor: (color: string)”
“I'm writing C#/PowerShell code to get all a service's configuration with QueryServiceConfig2 using P/Invoke. I'm able to get all configuration information except preferred node ( SERVICE_CONFIG_PREFERRED_NODE / 9 ), which results in a "The parameter is incorrect" error, 87 / 0x80004005 . Here is my PowerShell code: using namespace System.Runtime.InteropServices Add-Type -TypeDefinition @" using System; using System.Runtime.InteropServices; namespace AdvApi32 { public class Interop { [DllImport("”
“I'm trying to install Wfuzz package with the Pip tool but whenever i try i get this error: Collecting pycurl [46 lines of output] note: This error originates from a subprocess, and is likely not a problem with pip. ERROR: Failed”
“[unanswered, 59 views] I'm trying get data from BLS using code below. I have windows machine with zscalar with Python 3.14. Please help me. import requests import json headers = { 'Content-type': 'application/json', 'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36' } data = json.dumps({"seriesid": ['CUUR0000SA0','SUUR0000SA0'], "startyear": "2011", "endyear": "2014"}) try: session = requests.Session() p = session.post(”
“[unanswered, 75 views] We are trying to test ReadTimeOut exception by using useHttps() method of MockWebserver3, but unable to get this error. Please suggest if we can achieve this with useHttps() method, while upgrading springboot from 3.3.x to 3.5.x @Test void shouldThrowSocketTimeoutExceptionOnReadTimeout() { mockWebServer = new MockWebServer(); mockWebServer.useHttps(sslSocketFactory) // Arrange: enqueue a response that delays the body for 5 seconds mockWebServer.enqueue( new MockResponse().”
“[unanswered, 78 views] This piece of code: #include #include #include #include #include #include int main() { SDL_Init(SDL_INIT_VIDEO); TTF_Init(); char* mem = nullptr; size_t size = 0; { std::ifstream font_load{"test_font.ttf", std::ios_base::in | std::ios_base::binary}; font_load.seekg(0, std::ios_base::end); size = font_load.tellg(); font_load.seekg(0); mem = new char[size]; font_load.read(mem,”
“I am using feign client calls in microservice architecture. I am getting below error, while fetching data from the client call. feign.codec.DecodeException: Error while extracting response for type [class java.lang.String] and content type [application/json] at feign.InvocationContext.decode(InvocationContext.java:125) at feign.InvocationContext.proceed(InvocationContext.java:94) at feign.ResponseHandler.handleResponse(ResponseHandler.java:69) at feign.SynchronousMethodHandler.executeAndDecode(S”
“When stepping through the below lines of code via RStudio (ctrl+enter) I'm getting the following error: Error in .rs.exprMutatesPackageLibrary(expr) : argument "part" is missing, with no default The error does not occur when using the "Source" button instead. library(data.table) library(fs) DT sessionI”
“[unanswered, 134 views] In setting up my development environment on debian 13 for wxWidgets using Visual Studio Code. I successfully installed all requirements for C++, wxWidgets and vcpkg following: wxWidgets and vcpkg and Tutorial: Install and use packages with CMake in Visual Studio Code however, in setting up the CMakeLists.txt in the Tutorial "5 - Set up the project files", I get this Exception has occurred: FATAL_ERROR : Exception has occurred: FATAL_ERROR CMake Error at CMakeLists.txt:3 (”