Improved error handling

CB/CurseForge.py

@@ -4,6 +4,7 @@
 import requests
 from . import retry, HEADERS
 from operator import itemgetter
+from json import JSONDecodeError
 
 
 class CurseForgeAddon:
@@ -14,15 +15,18 @@ def __init__(self, url, project, checkcache, clienttype, allowdev):
         else:
             self.payload = requests.get(f'https://addons-ecs.forgesvc.net/api/v2/addon/{project}',
                                         headers=HEADERS)
-            if self.payload.status_code == 404:
+            if self.payload.status_code == 404 or self.payload.status_code == 500:
                 raise RuntimeError(f'{url}\nThis might be a temporary issue with CurseForge API or the project was '
                                    f'removed/renamed. In this case, uninstall it (and reinstall if it still exists) '
                                    f'to fix this issue.')
             elif self.payload.status_code == 403:
                 raise RuntimeError(f'{url}\nAccess to CurseForge API was blocked. It is most likely caused by your'
                                    f' ISP or internet filter implemented by your government.')
             else:
-                self.payload = self.payload.json()
+                try:
+                    self.payload = self.payload.json()
+                except (StopIteration, JSONDecodeError):
+                    raise RuntimeError(f'{url}\nThis might be a temporary issue with CurseForge API.')
         self.name = self.payload['name'].strip().strip('\u200b')
         if not len(self.payload['latestFiles']) > 0:
             raise RuntimeError(f'{self.name}.\nThe project doesn\'t have any releases.')