Issue #3391765: table 'devel_debug_log' already exists.

devel_debug_log.install

@@ -52,3 +52,12 @@ function devel_debug_log_schema() {
 
   return $schema;
 }
+
+/**
+ * Implements hook_uninstall().
+ */
+function devel_debug_log_uninstall() {
+  if (\Drupal::database()->schema()->tableExists('devel_debug_log')) {
+    \Drupal::database()->schema()->dropTable('devel_debug_log');
+  }
+}