diff --git a/src/cli/Directive.ts b/src/cli/Directive.ts
index b51523a..5f9ba2e 100644
--- a/src/cli/Directive.ts
+++ b/src/cli/Directive.ts
@@ -169,8 +169,11 @@ export abstract class Directive extends AppClass {
                 const optionValues = this.parseOptions(options, argv)
                 this.setOptionValues(optionValues)
                 await this.handle(argv)
-            } catch (e) {
-                this.nativeOutput(e.message)
+            } catch (e: unknown) {
+                if ( e instanceof Error ) {
+                    this.nativeOutput(e.message)
+                }
+
                 if ( e instanceof OptionValidationError ) {
                     // expecting, value, requirements
                     if ( e.context.expecting ) {
@@ -187,6 +190,7 @@ export abstract class Directive extends AppClass {
                         this.nativeOutput(`  - ${e.context.value}`)
                     }
                 }
+
                 this.nativeOutput('\nUse --help for more info.')
             }
         }
diff --git a/src/lifecycle/Application.ts b/src/lifecycle/Application.ts
index 1f747e4..d6c9294 100644
--- a/src/lifecycle/Application.ts
+++ b/src/lifecycle/Application.ts
@@ -259,8 +259,12 @@ export class Application extends Container {
         try {
             await this.up()
             await this.down()
-        } catch (e) {
-            this.errorHandler(e)
+        } catch (e: unknown) {
+            if ( e instanceof Error ) {
+                this.errorHandler(e)
+            }
+
+            throw e
         }
     }
 
@@ -306,9 +310,14 @@ export class Application extends Container {
             await unit.up()
             unit.status = UnitStatus.Started
             logging.info(`Started ${unit.constructor.name}.`)
-        } catch (e) {
+        } catch (e: unknown) {
             unit.status = UnitStatus.Error
-            throw this.errorWrapContext(e, {unitName: unit.constructor.name})
+
+            if ( e instanceof Error ) {
+                throw this.errorWrapContext(e, {unitName: unit.constructor.name})
+            }
+
+            throw e
         }
     }
 
@@ -327,7 +336,12 @@ export class Application extends Container {
             logging.info(`Stopped ${unit.constructor.name}.`)
         } catch (e) {
             unit.status = UnitStatus.Error
-            throw this.errorWrapContext(e, {unitName: unit.constructor.name})
+
+            if ( e instanceof Error ) {
+                throw this.errorWrapContext(e, {unitName: unit.constructor.name})
+            }
+
+            throw e
         }
     }
 }
diff --git a/src/lifecycle/RunLevelErrorHandler.ts b/src/lifecycle/RunLevelErrorHandler.ts
index 32f49fa..b03766b 100644
--- a/src/lifecycle/RunLevelErrorHandler.ts
+++ b/src/lifecycle/RunLevelErrorHandler.ts
@@ -79,10 +79,13 @@ ${contextDisplay}
             }
 
             this.logging.error(errorString, true)
-        } catch (displayError) {
-            // The error display encountered an error...
-            // just throw the original so it makes it out
-            console.error('RunLevelErrorHandler encountered an error:', displayError.message)  // eslint-disable-line no-console
+        } catch (displayError: unknown) {
+            if ( displayError instanceof Error ) {
+                // The error display encountered an error...
+                // just throw the original so it makes it out
+                console.error('RunLevelErrorHandler encountered an error:', displayError.message)  // eslint-disable-line no-console
+            }
+
             throw operativeError
         }
     }
diff --git a/src/orm/connection/PostgresConnection.ts b/src/orm/connection/PostgresConnection.ts
index cfce90a..df071c7 100644
--- a/src/orm/connection/PostgresConnection.ts
+++ b/src/orm/connection/PostgresConnection.ts
@@ -63,10 +63,12 @@ export class PostgresConnection extends Connection {
                 rowCount: result.rowCount,
             }
         } catch (e) {
-            throw this.app().errorWrapContext(e, {
-                query,
-                connection: this.name,
-            })
+            if ( e instanceof Error ) {
+                throw this.app().errorWrapContext(e, {
+                    query,
+                    connection: this.name,
+                })
+            }
         }
     }
 
diff --git a/src/service/HTTPServer.ts b/src/service/HTTPServer.ts
index e92a40b..8c22d6a 100644
--- a/src/service/HTTPServer.ts
+++ b/src/service/HTTPServer.ts
@@ -1,5 +1,5 @@
 import {Inject, Singleton} from '../di'
-import {HTTPStatus, withTimeout} from '../util'
+import {ErrorWithContext, HTTPStatus, withTimeout} from '../util'
 import {Unit} from '../lifecycle/Unit'
 import {createServer, IncomingMessage, RequestListener, Server, ServerResponse} from 'http'
 import {Logging} from './Logging'
@@ -114,7 +114,11 @@ export class HTTPServer extends Unit {
             try {
                 await this.kernel.handle(extolloReq)
             } catch (e) {
-                await error(e).write(extolloReq)
+                if ( e instanceof Error ) {
+                    await error(e).write(extolloReq)
+                }
+
+                await error(new ErrorWithContext('Unknown error occurred.', { e }))
             }
 
             await extolloReq.response.send()
diff --git a/src/util/support/BehaviorSubject.ts b/src/util/support/BehaviorSubject.ts
index 3280dc5..6b73ec7 100644
--- a/src/util/support/BehaviorSubject.ts
+++ b/src/util/support/BehaviorSubject.ts
@@ -137,7 +137,7 @@ export class BehaviorSubject<T> {
                 } catch (e) {
                     if ( e instanceof UnsubscribeError ) {
                         this.subscribers = this.subscribers.filter(x => x !== subscriber)
-                    } else if (subscriber.error) {
+                    } else if (subscriber.error && e instanceof Error) {
                         await subscriber.error(e)
                     } else {
                         throw e
@@ -181,7 +181,7 @@ export class BehaviorSubject<T> {
                 try {
                     await subscriber.complete(finalValue)
                 } catch (e) {
-                    if ( subscriber.error ) {
+                    if ( subscriber.error && e instanceof Error ) {
                         await subscriber.error(e)
                     } else {
                         throw e
diff --git a/src/util/support/path/LocalFilesystem.ts b/src/util/support/path/LocalFilesystem.ts
index dc50c41..0ad5b32 100644
--- a/src/util/support/path/LocalFilesystem.ts
+++ b/src/util/support/path/LocalFilesystem.ts
@@ -92,7 +92,7 @@ export class LocalFilesystem extends Filesystem {
                 isFile: stat.isFile(),
             }
         } catch (e) {
-            if ( e?.code === 'ENOENT' ) {
+            if ( (e as any)?.code === 'ENOENT' ) {
                 return {
                     path: new UniversalPath(args.storePath, this),
                     exists: false,