Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires symfony/swiftmailer-bundle ^3.0 -> satisfiable by symfony/swiftmailer-bundle[v3.0.0, ..., v3.5.4]. - symfony/swiftmailer-bundle[v3.0.0, ..., v3.0.4] require symfony/dependency-injection ~2.7|~3.0 -> found symfony/dependency-injection[v2.7.0, ..., v2.8.52, v3.0.0, ..., v3.4.47] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.1.0, ..., v3.1.4] require symfony/dependency-injection ~2.7|~3.4|~4.0 -> found symfony/dependency-injection[v2.7.0, ..., v2.8.52, v3.4.0, ..., v3.4.47, v4.0.0, ..., v4.4.49] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.1.5, ..., v3.2.8] require symfony/dependency-injection ~2.7|~3.3|~4.0 -> found symfony/dependency-injection[v2.7.0, ..., v2.8.52, v3.3.0, ..., v3.4.47, v4.0.0, ..., v4.4.49] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.3.0, ..., v3.3.1] require symfony/dependency-injection ^3.4|^4.0|^5.0 -> found symfony/dependency-injection[v3.4.0, ..., v3.4.47, v4.0.0, ..., v4.4.49, v5.0.0, ..., v5.4.48] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle v3.4.0 requires symfony/dependency-injection ^4.3.8|^5.0 -> found symfony/dependency-injection[v4.3.8, ..., v4.4.49, v5.0.0, ..., v5.4.48] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.5.0, ..., v3.5.4] require symfony/dependency-injection ^4.4|^5.0 -> found symfony/dependency-injection[v4.4.0, ..., v4.4.49, v5.0.0, ..., v5.4.48] but these were not loaded, likely because it conflicts with another require. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires symfony/swiftmailer-bundle ^3.0 -> satisfiable by symfony/swiftmailer-bundle[v3.0.0, ..., v3.5.4]. - symfony/swiftmailer-bundle[v3.0.0, ..., v3.0.4] require symfony/dependency-injection ~2.7|~3.0 -> found symfony/dependency-injection[v2.7.0, ..., v2.8.52, v3.0.0, ..., v3.4.47] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.1.0, ..., v3.1.4] require symfony/dependency-injection ~2.7|~3.4|~4.0 -> found symfony/dependency-injection[v2.7.0, ..., v2.8.52, v3.4.0, ..., v3.4.47, v4.0.0, ..., v4.4.49] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.1.5, ..., v3.2.8] require symfony/dependency-injection ~2.7|~3.3|~4.0 -> found symfony/dependency-injection[v2.7.0, ..., v2.8.52, v3.3.0, ..., v3.4.47, v4.0.0, ..., v4.4.49] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.3.0, ..., v3.3.1] require symfony/dependency-injection ^3.4|^4.0|^5.0 -> found symfony/dependency-injection[v3.4.0, ..., v3.4.47, v4.0.0, ..., v4.4.49, v5.0.0, ..., v5.4.48] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle v3.4.0 requires symfony/dependency-injection ^4.3.8|^5.0 -> found symfony/dependency-injection[v4.3.8, ..., v4.4.49, v5.0.0, ..., v5.4.48] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.5.0, ..., v3.5.4] require symfony/dependency-injection ^4.4|^5.0 -> found symfony/dependency-injection[v4.4.0, ..., v4.4.49, v5.0.0, ..., v5.4.48] but these were not loaded, likely because it conflicts with another require. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Process completed with exit code 2.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires symfony/swiftmailer-bundle ^3.0 -> satisfiable by symfony/swiftmailer-bundle[v3.0.0, ..., v3.5.4]. - symfony/swiftmailer-bundle[v3.0.0, ..., v3.0.4] require symfony/dependency-injection ~2.7|~3.0 -> found symfony/dependency-injection[v2.7.0, ..., v2.8.52, v3.0.0, ..., v3.4.47] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.1.0, ..., v3.1.4] require symfony/dependency-injection ~2.7|~3.4|~4.0 -> found symfony/dependency-injection[v2.7.0, ..., v2.8.52, v3.4.0, ..., v3.4.47, v4.0.0, ..., v4.4.49] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.1.5, ..., v3.2.8] require symfony/dependency-injection ~2.7|~3.3|~4.0 -> found symfony/dependency-injection[v2.7.0, ..., v2.8.52, v3.3.0, ..., v3.4.47, v4.0.0, ..., v4.4.49] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.3.0, ..., v3.3.1] require symfony/dependency-injection ^3.4|^4.0|^5.0 -> found symfony/dependency-injection[v3.4.0, ..., v3.4.47, v4.0.0, ..., v4.4.49, v5.0.0, ..., v5.4.48] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle v3.4.0 requires symfony/dependency-injection ^4.3.8|^5.0 -> found symfony/dependency-injection[v4.3.8, ..., v4.4.49, v5.0.0, ..., v5.4.48] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.5.0, ..., v3.5.4] require symfony/dependency-injection ^4.4|^5.0 -> found symfony/dependency-injection[v4.4.0, ..., v4.4.49, v5.0.0, ..., v5.4.48] but these were not loaded, likely because it conflicts with another require. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Your requirements could not be resolved to an installable set of packages. Problem 1 - Root composer.json requires symfony/swiftmailer-bundle ^3.0 -> satisfiable by symfony/swiftmailer-bundle[v3.0.0, ..., v3.5.4]. - symfony/swiftmailer-bundle[v3.0.0, ..., v3.0.4] require symfony/dependency-injection ~2.7|~3.0 -> found symfony/dependency-injection[v2.7.0, ..., v2.8.52, v3.0.0, ..., v3.4.47] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.1.0, ..., v3.1.4] require symfony/dependency-injection ~2.7|~3.4|~4.0 -> found symfony/dependency-injection[v2.7.0, ..., v2.8.52, v3.4.0, ..., v3.4.47, v4.0.0, ..., v4.4.49] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.1.5, ..., v3.2.8] require symfony/dependency-injection ~2.7|~3.3|~4.0 -> found symfony/dependency-injection[v2.7.0, ..., v2.8.52, v3.3.0, ..., v3.4.47, v4.0.0, ..., v4.4.49] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.3.0, ..., v3.3.1] require symfony/dependency-injection ^3.4|^4.0|^5.0 -> found symfony/dependency-injection[v3.4.0, ..., v3.4.47, v4.0.0, ..., v4.4.49, v5.0.0, ..., v5.4.48] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle v3.4.0 requires symfony/dependency-injection ^4.3.8|^5.0 -> found symfony/dependency-injection[v4.3.8, ..., v4.4.49, v5.0.0, ..., v5.4.48] but these were not loaded, likely because it conflicts with another require. - symfony/swiftmailer-bundle[v3.5.0, ..., v3.5.4] require symfony/dependency-injection ^4.4|^5.0 -> found symfony/dependency-injection[v4.4.0, ..., v4.4.49, v5.0.0, ..., v5.4.48] but these were not loaded, likely because it conflicts with another require. Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.