diff --git a/openvidu-server/src/main/java/io/openvidu/server/core/SessionManager.java b/openvidu-server/src/main/java/io/openvidu/server/core/SessionManager.java
index 291ca916..63dde4f6 100644
--- a/openvidu-server/src/main/java/io/openvidu/server/core/SessionManager.java
+++ b/openvidu-server/src/main/java/io/openvidu/server/core/SessionManager.java
@@ -207,8 +207,10 @@ public abstract class SessionManager {
 		if (this.coturnCredentialsService.isCoturnAvailable()) {
 			turnCredentials = coturnCredentialsService.createUser();
 			if (turnCredentials != null) {
-				token += "&turnUsername=" + turnCredentials.getUsername();
-				token += "&turnCredential=" + turnCredentials.getCredential();
+				if (turnCredentials != null) {
+					token += "&turnUsername=" + turnCredentials.getUsername();
+					token += "&turnCredential=" + turnCredentials.getCredential();
+				}
 			}
 		}
 		Token t = new Token(token, role, serverMetadata, turnCredentials);
@@ -282,8 +284,10 @@ public abstract class SessionManager {
 			TurnCredentials turnCredentials = null;
 			if (this.coturnCredentialsService.isCoturnAvailable()) {
 				turnCredentials = coturnCredentialsService.createUser();
-				token += "&turnUsername=" + turnCredentials.getUsername();
-				token += "&turnCredential=" + turnCredentials.getCredential();
+				if (turnCredentials != null) {
+					token += "&turnUsername=" + turnCredentials.getUsername();
+					token += "&turnCredential=" + turnCredentials.getCredential();
+				}
 			}
 			Token t = new Token(token, role, serverMetadata, turnCredentials);
 		
diff --git a/openvidu-server/src/main/java/io/openvidu/server/coturn/BashCoturnCredentialsService.java b/openvidu-server/src/main/java/io/openvidu/server/coturn/BashCoturnCredentialsService.java
index 347c27f6..48173d7d 100644
--- a/openvidu-server/src/main/java/io/openvidu/server/coturn/BashCoturnCredentialsService.java
+++ b/openvidu-server/src/main/java/io/openvidu/server/coturn/BashCoturnCredentialsService.java
@@ -22,9 +22,15 @@ public class BashCoturnCredentialsService extends CoturnCredentialsService {
 			if (response.contains("turnadmin: not found")) {
 				// No coturn installed in the host machine
 				log.warn("No COTURN server is installed in the host machine");
+				log.warn("No COTURN server will be configured for clients");
 				this.coturnAvailable = false;
+			} else if (response.contains("Cannot open SQLite DB connection")) {
+				log.warn("COTURN SQLite database is not accesible at path " + this.coturnDatabaseLocation);
+				log.warn("No COTURN server will be configured for clients");
+				this.coturnAvailable = false;
+			} else {
+				log.info("COTURN sqlite database location: " + this.openviduConfig.getCoturnSqlite());
 			}
-			log.info("COTURN sqlite database location: " + this.openviduConfig.getCoturnSqlite());
 		} catch (IOException | InterruptedException e) {
 			e.printStackTrace();
 		}