The analysis of call to undefined function international\image\gd\imageCreateFromJPEG()
1. Error: call to undefined function international\image\gd\imagecreateFromJPEG(). as shown in Figure 1
2. Check phpinfo and find that the gd library does not support jpeg format. as shown in Figure 2
3. By upgrading the basic image of the container, check phpinfo, and add the value of jpeg support to Enabled. The GD library already supports the JPEG format. No errors are reported, in line with expectations. as shown in Figure 3


