Integrated development environment terminal, platform server, and medium

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for error handling in an integrated development environment (IDE) are provided. One of the methods, applicable to an IDE server, includes: sending a project package comprising a plurality of components supporting development of an application to an IDE terminal in response to a query of the IDE terminal; receiving a first error identifier indicating an error that occurs to the project package from the IDE terminal; determining an erroneous component where the error occurs from the plurality of components in the project package based on the first error identifier; determining a diagnosis solution corresponding to the first error identifier and the erroneous component by looking up mapping relationships stored on the server between error identifiers and diagnosis solutions associated with the plurality of components; and returning the determined diagnosis solution to the IDE terminal.