array_push(): Argument #1 ($array) must be of type array, null given

Call Stack

1. in tcpdf.php line 18399
2. at array_push() in tcpdf.php line 18399
3. at TCPDF->writeHTML() in Pdf.php line 309
4. at pdf->article()
5. at ReflectionMethod->invokeArgs() in Container.php line 345
6. at Container->invokeReflectMethod() in Controller.php line 110
7. at Controller->think\route\dispatch\{closure}() in Pipeline.php line 59
8. at Pipeline->think\{closure}() in Pipeline.php line 66
9. at Pipeline->then() in Controller.php line 113
10. at Controller->exec() in Dispatch.php line 52
11. at Dispatch->run() in Route.php line 755
12. at Route->think\{closure}() in Pipeline.php line 59
13. at Pipeline->think\{closure}() in Pipeline.php line 66
14. at Pipeline->then() in Route.php line 756
15. at Route->dispatch() in Http.php line 208
16. at Http->dispatchToRoute() in Http.php line 198
17. at Http->think\{closure}() in Pipeline.php line 59
18. at Pipeline->think\{closure}() in MultiApp.php line 51
19. at MultiApp->think\app\{closure}() in Pipeline.php line 59
20. at Pipeline->think\{closure}() in AllowCrossDomain.php line 61
21. at AllowCrossDomain->handle()
22. at call_user_func() in Middleware.php line 134
23. at Middleware->think\{closure}() in Pipeline.php line 85
24. at Pipeline->think\{closure}() in SessionInit.php line 58
25. at SessionInit->handle()
26. at call_user_func() in Middleware.php line 134
27. at Middleware->think\{closure}() in Pipeline.php line 85
28. at Pipeline->think\{closure}() in LoadLangPack.php line 53
29. at LoadLangPack->handle()
30. at call_user_func() in Middleware.php line 134
31. at Middleware->think\{closure}() in Pipeline.php line 85
32. at Pipeline->think\{closure}() in Pipeline.php line 66
33. at Pipeline->then() in MultiApp.php line 52
34. at MultiApp->handle()
35. at call_user_func() in Middleware.php line 134
36. at Middleware->think\{closure}() in Pipeline.php line 85
37. at Pipeline->think\{closure}() in Install.php line 19
38. at Install->handle()
39. at call_user_func() in Middleware.php line 134
40. at Middleware->think\{closure}() in Pipeline.php line 85
41. at Pipeline->think\{closure}() in AllowCrossDomain.php line 61
42. at AllowCrossDomain->handle()
43. at call_user_func() in Middleware.php line 134
44. at Middleware->think\{closure}() in Pipeline.php line 85
45. at Pipeline->think\{closure}() in SessionInit.php line 58
46. at SessionInit->handle()
47. at call_user_func() in Middleware.php line 134
48. at Middleware->think\{closure}() in Pipeline.php line 85
49. at Pipeline->think\{closure}() in Pipeline.php line 66
50. at Pipeline->then() in Http.php line 199
51. at Http->runWithRequest() in Http.php line 162
52. at Http->run() in index.php line 29